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105155401 = 138088877
BaseRepresentation
bin1100100010010…
…00101101001001
321022212110002111
412101020231021
5203404433101
614233502321
72414543341
oct621105511
9238773074
10105155401
11543a289a
122b2719a1
1318a2a240
14dd73d21
159372251
hex6448b49

105155401 has 4 divisors (see below), whose sum is σ = 113244292. Its totient is φ = 97066512.

The previous prime is 105155371. The next prime is 105155411. The reversal of 105155401 is 104551501.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 104551501 = 607172243.

It can be written as a sum of positive squares in 2 ways, for example, as 44689225 + 60466176 = 6685^2 + 7776^2 .

It is a cyclic number.

It is not a de Polignac number, because 105155401 - 213 = 105147209 is a prime.

It is a super-2 number, since 2×1051554012 = 22115316718941602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105155411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4044426 + ... + 4044451.

It is an arithmetic number, because the mean of its divisors is an integer number (28311073).

Almost surely, 2105155401 is an apocalyptic number.

It is an amenable number.

105155401 is a deficient number, since it is larger than the sum of its proper divisors (8088891).

105155401 is an equidigital number, since it uses as much as digits as its factorization.

105155401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8088890.

The product of its (nonzero) digits is 500, while the sum is 22.

The square root of 105155401 is about 10254.5307547445. The cubic root of 105155401 is about 472.0020243737.

The spelling of 105155401 in words is "one hundred five million, one hundred fifty-five thousand, four hundred one".

Divisors: 1 13 8088877 105155401