55800513 has 12 divisors (see below), whose sum is σ = 80665728. Its totient is φ = 37170360.

The previous prime is 55800509. The next prime is 55800523. The reversal of 55800513 is 31500855.

55800513 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55800513 - 2² = 55800509 is a prime.

It is a super-2 number, since 2×55800513² = 6227394502126338, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55800523) 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 11 ways as a sum of consecutive naturals, for example, 19228 + ... + 21938.

It is an arithmetic number, because the mean of its divisors is an integer number (6722144).

Almost surely, 2^55800513 is an apocalyptic number.

It is an amenable number.

55800513 is a deficient number, since it is larger than the sum of its proper divisors (24865215).

55800513 is a wasteful number, since it uses less digits than its factorization.

55800513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5004 (or 5001 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

The square root of 55800513 is about 7469.9740963406. The cubic root of 55800513 is about 382.1314044973.

The spelling of 55800513 in words is "fifty-five million, eight hundred thousand, five hundred thirteen".