105204155 has 32 divisors (see below), whose sum is σ = 149022720. Its totient is φ = 69799680.

The previous prime is 105204149. The next prime is 105204161. The reversal of 105204155 is 551402501.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (105204149) and next prime (105204161).

It is not a de Polignac number, because 105204155 - 2²² = 101009851 is a prime.

It is a super-2 number, since 2×105204155² = 22135828458528050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 105204155.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 239426 + ... + 239864.

It is an arithmetic number, because the mean of its divisors is an integer number (4656960).

Almost surely, 2^105204155 is an apocalyptic number.

105204155 is a deficient number, since it is larger than the sum of its proper divisors (43818565).

105204155 is a wasteful number, since it uses less digits than its factorization.

105204155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 659.

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 105204155 is about 10256.9076723933. The cubic root of 105204155 is about 472.0749590684.

Adding to 105204155 its reverse (551402501), we get a palindrome (656606656).

The spelling of 105204155 in words is "one hundred five million, two hundred four thousand, one hundred fifty-five".