55402506 has 24 divisors (see below), whose sum is σ = 120182400. Its totient is φ = 18445416.

The previous prime is 55402483. The next prime is 55402511. The reversal of 55402506 is 60520455.

It is a self number, because there is not a number n which added to its sum of digits gives 55402506.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21895 + ... + 24293.

It is an arithmetic number, because the mean of its divisors is an integer number (5007600).

Almost surely, 2^55402506 is an apocalyptic number.

55402506 is an abundant number, since it is smaller than the sum of its proper divisors (64779894).

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

55402506 is a wasteful number, since it uses less digits than its factorization.

55402506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3690 (or 3687 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 55402506 is about 7443.2859679042. The cubic root of 55402506 is about 381.2206959112.

The spelling of 55402506 in words is "fifty-five million, four hundred two thousand, five hundred six".