11572645 has 16 divisors (see below), whose sum is σ = 16098048. Its totient is φ = 7822080.

The previous prime is 11572637. The next prime is 11572663. The reversal of 11572645 is 54627511.

It is not a de Polignac number, because 11572645 - 2³ = 11572637 is a prime.

It is a super-2 number, since 2×11572645² = 267852224592050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 157 + ... + 4813.

It is an arithmetic number, because the mean of its divisors is an integer number (1006128).

Almost surely, 2^11572645 is an apocalyptic number.

It is an amenable number.

11572645 is a deficient number, since it is larger than the sum of its proper divisors (4525403).

11572645 is an equidigital number, since it uses as much as digits as its factorization.

11572645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4740.

The product of its digits is 8400, while the sum is 31.

The square root of 11572645 is about 3401.8590505781. The cubic root of 11572645 is about 226.1921578172.

The spelling of 11572645 in words is "eleven million, five hundred seventy-two thousand, six hundred forty-five".