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10105015 = 52021003
BaseRepresentation
bin100110100011…
…000010110111
3201000101110211
4212203002313
510041330030
61000330251
7151614454
oct46430267
921011424
1010105015
115782058
123473987
13212a5cb
1414b082b
15d4912a
hex9a30b7

10105015 has 4 divisors (see below), whose sum is σ = 12126024. Its totient is φ = 8084008.

The previous prime is 10105013. The next prime is 10105019. The reversal of 10105015 is 51050101.

10105015 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10105015 - 21 = 10105013 is a prime.

It is a super-2 number, since 2×101050152 = 204222656300450, which contains 22 as substring.

It is a Smith number, since the sum of its digits (13) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10104986 and 10105004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10105013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1010497 + ... + 1010506.

It is an arithmetic number, because the mean of its divisors is an integer number (3031506).

Almost surely, 210105015 is an apocalyptic number.

10105015 is a deficient number, since it is larger than the sum of its proper divisors (2021009).

10105015 is an equidigital number, since it uses as much as digits as its factorization.

10105015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2021008.

The product of its (nonzero) digits is 25, while the sum is 13.

The square root of 10105015 is about 3178.8386244036. The cubic root of 10105015 is about 216.1950042247.

Adding to 10105015 its reverse (51050101), we get a palindrome (61155116).

It can be divided in two parts, 1010501 and 5, that multiplied together give a palindrome (5052505).

The spelling of 10105015 in words is "ten million, one hundred five thousand, fifteen".

Divisors: 1 5 2021003 10105015