55595220 has 24 divisors (see below), whose sum is σ = 155666784. Its totient is φ = 14825376.

The previous prime is 55595213. The next prime is 55595231. The reversal of 55595220 is 2259555.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 463234 + ... + 463353.

It is an arithmetic number, because the mean of its divisors is an integer number (6486116).

Almost surely, 2^55595220 is an apocalyptic number.

It is an amenable number.

55595220 is an abundant number, since it is smaller than the sum of its proper divisors (100071564).

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

55595220 is a wasteful number, since it uses less digits than its factorization.

55595220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 926599 (or 926597 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 33.

The square root of 55595220 is about 7456.2202220696. The cubic root of 55595220 is about 381.6622014907.

The spelling of 55595220 in words is "fifty-five million, five hundred ninety-five thousand, two hundred twenty".