11157945 has 16 divisors (see below), whose sum is σ = 18289152. Its totient is φ = 5805440.

The previous prime is 11157943. The next prime is 11157961. The reversal of 11157945 is 54975111.

It is not a de Polignac number, because 11157945 - 2¹ = 11157943 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11157943) 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 15 ways as a sum of consecutive naturals, for example, 8457 + ... + 9686.

It is an arithmetic number, because the mean of its divisors is an integer number (1143072).

Almost surely, 2^11157945 is an apocalyptic number.

11157945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11157945 is a deficient number, since it is larger than the sum of its proper divisors (7131207).

11157945 is a wasteful number, since it uses less digits than its factorization.

11157945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18192.

The product of its digits is 6300, while the sum is 33.

The square root of 11157945 is about 3340.3510294578. The cubic root of 11157945 is about 223.4573987038.

The spelling of 11157945 in words is "eleven million, one hundred fifty-seven thousand, nine hundred forty-five".