552521865 has 32 divisors (see below), whose sum is σ = 1025418240. Its totient is φ = 248808384.

The previous prime is 552521861. The next prime is 552521909. The reversal of 552521865 is 568125255.

It is not a de Polignac number, because 552521865 - 2² = 552521861 is a prime.

It is a super-2 number, since 2×552521865² = 610560822606156450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (552521861) 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 31 ways as a sum of consecutive naturals, for example, 32235 + ... + 46304.

It is an arithmetic number, because the mean of its divisors is an integer number (32044320).

Almost surely, 2^552521865 is an apocalyptic number.

It is an amenable number.

552521865 is a deficient number, since it is larger than the sum of its proper divisors (472896375).

552521865 is a wasteful number, since it uses less digits than its factorization.

552521865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78621.

The product of its digits is 120000, while the sum is 39.

The square root of 552521865 is about 23505.7836499871. The cubic root of 552521865 is about 820.5716146266.

The spelling of 552521865 in words is "five hundred fifty-two million, five hundred twenty-one thousand, eight hundred sixty-five".