55800531 has 6 divisors (see below), whose sum is σ = 80600780. Its totient is φ = 37200348.

The previous prime is 55800529. The next prime is 55800593. The reversal of 55800531 is 13500855.

55800531 is a `hidden beast` number, since 55 + 80 + 0 + 531 = 666.

It is not a de Polignac number, because 55800531 - 2¹ = 55800529 is a prime.

It is a super-2 number, since 2×55800531² = 6227398519763922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55800495 and 55800504.

It is not an unprimeable number, because it can be changed into a prime (55800331) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3100021 + ... + 3100038.

Almost surely, 2^55800531 is an apocalyptic number.

55800531 is a deficient number, since it is larger than the sum of its proper divisors (24800249).

55800531 is a wasteful number, since it uses less digits than its factorization.

55800531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6200065 (or 6200062 counting only the distinct ones).

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

The square root of 55800531 is about 7469.9753011640. The cubic root of 55800531 is about 382.1314455863.

The spelling of 55800531 in words is "fifty-five million, eight hundred thousand, five hundred thirty-one".