55322590 has 32 divisors (see below), whose sum is σ = 110030400. Its totient is φ = 19920384.

The previous prime is 55322549. The next prime is 55322609. The reversal of 55322590 is 9522355.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3165 + ... + 10984.

It is an arithmetic number, because the mean of its divisors is an integer number (3438450).

Almost surely, 2^55322590 is an apocalyptic number.

55322590 is a deficient number, since it is larger than the sum of its proper divisors (54707810).

55322590 is a wasteful number, since it uses less digits than its factorization.

55322590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14196.

The product of its (nonzero) digits is 13500, while the sum is 31.

The square root of 55322590 is about 7437.9157026683. The cubic root of 55322590 is about 381.0373089396.

The spelling of 55322590 in words is "fifty-five million, three hundred twenty-two thousand, five hundred ninety".