55825875 has 128 divisors (see below), whose sum is σ = 125798400. Its totient is φ = 23846400.

The previous prime is 55825871. The next prime is 55825879. The reversal of 55825875 is 57852855.

55825875 is a `hidden beast` number, since 558 + 25 + 8 + 75 = 666.

It is an interprime number because it is at equal distance from previous prime (55825871) and next prime (55825879).

It is not a de Polignac number, because 55825875 - 2² = 55825871 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 55825875.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55825871) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 401556 + ... + 401694.

It is an arithmetic number, because the mean of its divisors is an integer number (982800).

Almost surely, 2^55825875 is an apocalyptic number.

55825875 is an abundant number, since it is smaller than the sum of its proper divisors (69972525).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55825875 is a wasteful number, since it uses less digits than its factorization.

55825875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187 (or 171 counting only the distinct ones).

The product of its digits is 560000, while the sum is 45.

The square root of 55825875 is about 7471.6714997382. The cubic root of 55825875 is about 382.1892901583.

The spelling of 55825875 in words is "fifty-five million, eight hundred twenty-five thousand, eight hundred seventy-five".