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10122517 = 12897853
BaseRepresentation
bin100110100111…
…010100010101
3201001021111001
4212213110111
510042410032
61000543301
7152016466
oct46472425
921037431
1010122517
115794219
123481b31
132135572
1414b6d6d
15d4e3e7
hex9a7515

10122517 has 4 divisors (see below), whose sum is σ = 10131660. Its totient is φ = 10113376.

The previous prime is 10122499. The next prime is 10122527. The reversal of 10122517 is 71522101.

10122517 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, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 3538161 + 6584356 = 1881^2 + 2566^2 .

It is a cyclic number.

It is not a de Polignac number, because 10122517 - 27 = 10122389 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10122494 and 10122503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10122527) 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, 2638 + ... + 5215.

It is an arithmetic number, because the mean of its divisors is an integer number (2532915).

Almost surely, 210122517 is an apocalyptic number.

It is an amenable number.

10122517 is a deficient number, since it is larger than the sum of its proper divisors (9143).

10122517 is an equidigital number, since it uses as much as digits as its factorization.

10122517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9142.

The product of its (nonzero) digits is 140, while the sum is 19.

The square root of 10122517 is about 3181.5903256076. The cubic root of 10122517 is about 216.3197496278.

Adding to 10122517 its reverse (71522101), we get a palindrome (81644618).

The spelling of 10122517 in words is "ten million, one hundred twenty-two thousand, five hundred seventeen".

Divisors: 1 1289 7853 10122517