11572951 has 18 divisors (see below), whose sum is σ = 13216992. Its totient is φ = 10118160.

The previous prime is 11572949. The next prime is 11572961. The reversal of 11572951 is 15927511.

It is not a de Polignac number, because 11572951 - 2¹ = 11572949 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11572931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 246210 + ... + 246256.

Almost surely, 2^11572951 is an apocalyptic number.

11572951 is a deficient number, since it is larger than the sum of its proper divisors (1644041).

11572951 is an equidigital number, since it uses as much as digits as its factorization.

11572951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151 (or 91 counting only the distinct ones).

The product of its digits is 3150, while the sum is 31.

The square root of 11572951 is about 3401.9040256891. The cubic root of 11572951 is about 226.1941514320.

Multiplying 11572951 by its sum of digits (31), we get a square (358761481 = 18941²).

11572951 divided by its sum of digits (31) gives a square (373321 = 611²).

The spelling of 11572951 in words is "eleven million, five hundred seventy-two thousand, nine hundred fifty-one".