105155405 has 32 divisors (see below), whose sum is σ = 137462400. Its totient is φ = 76972032.

The previous prime is 105155371. The next prime is 105155411. The reversal of 105155405 is 504551501.

It is a cyclic number.

It is not a de Polignac number, because 105155405 - 2⁶ = 105155341 is a prime.

It is a super-2 number, since 2×105155405² = 22115318401428050, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

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, 409037 + ... + 409293.

It is an arithmetic number, because the mean of its divisors is an integer number (4295700).

Almost surely, 2^105155405 is an apocalyptic number.

It is an amenable number.

105155405 is a deficient number, since it is larger than the sum of its proper divisors (32306995).

105155405 is a wasteful number, since it uses less digits than its factorization.

105155405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413.

The product of its (nonzero) digits is 2500, while the sum is 26.

The square root of 105155405 is about 10254.5309497802. The cubic root of 105155405 is about 472.0020303585.

The spelling of 105155405 in words is "one hundred five million, one hundred fifty-five thousand, four hundred five".