11551172 has 6 divisors (see below), whose sum is σ = 20214558. Its totient is φ = 5775584.

The previous prime is 11551171. The next prime is 11551181. The reversal of 11551172 is 27115511.

It can be written as a sum of positive squares in only one way, i.e., 9523396 + 2027776 = 3086^2 + 1424^2 .

It is not an unprimeable number, because it can be changed into a prime (11551171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1443893 + ... + 1443900.

It is an arithmetic number, because the mean of its divisors is an integer number (3369093).

Almost surely, 2^11551172 is an apocalyptic number.

It is an amenable number.

11551172 is a deficient number, since it is larger than the sum of its proper divisors (8663386).

11551172 is a wasteful number, since it uses less digits than its factorization.

11551172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2887797 (or 2887795 counting only the distinct ones).

The product of its digits is 350, while the sum is 23.

The square root of 11551172 is about 3398.7015167561. The cubic root of 11551172 is about 226.0521716294.

Adding to 11551172 its reverse (27115511), we get a palindrome (38666683).

The spelling of 11551172 in words is "eleven million, five hundred fifty-one thousand, one hundred seventy-two".