11552553 has 24 divisors (see below), whose sum is σ = 17611776. Its totient is φ = 7286400.

The previous prime is 11552549. The next prime is 11552561. The reversal of 11552553 is 35525511.

It is not a de Polignac number, because 11552553 - 2² = 11552549 is a prime.

It is a super-2 number, since 2×11552553² = 266922961635618, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11552533) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12673 + ... + 13553.

It is an arithmetic number, because the mean of its divisors is an integer number (733824).

Almost surely, 2^11552553 is an apocalyptic number.

It is an amenable number.

11552553 is a deficient number, since it is larger than the sum of its proper divisors (6059223).

11552553 is a wasteful number, since it uses less digits than its factorization.

11552553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 965 (or 962 counting only the distinct ones).

The product of its digits is 3750, while the sum is 27.

The square root of 11552553 is about 3398.9046765098. The cubic root of 11552553 is about 226.0611798238.

The spelling of 11552553 in words is "eleven million, five hundred fifty-two thousand, five hundred fifty-three".