11157905 has 16 divisors (see below), whose sum is σ = 15004224. Its totient is φ = 7894080.

The previous prime is 11157889. The next prime is 11157917. The reversal of 11157905 is 50975111.

It is not a de Polignac number, because 11157905 - 2⁴ = 11157889 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 11.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 707 + ... + 4776.

It is an arithmetic number, because the mean of its divisors is an integer number (937764).

Almost surely, 2^11157905 is an apocalyptic number.

It is an amenable number.

11157905 is a deficient number, since it is larger than the sum of its proper divisors (3846319).

11157905 is a wasteful number, since it uses less digits than its factorization.

11157905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5536.

The product of its (nonzero) digits is 1575, while the sum is 29.

The square root of 11157905 is about 3340.3450420578. The cubic root of 11157905 is about 223.4571316801.

The spelling of 11157905 in words is "eleven million, one hundred fifty-seven thousand, nine hundred five".