55628870 has 32 divisors (see below), whose sum is σ = 109571616. Its totient is φ = 20166400.

The previous prime is 55628861. The next prime is 55628887. The reversal of 55628870 is 7882655.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50162 + ... + 51258.

It is an arithmetic number, because the mean of its divisors is an integer number (3424113).

Almost surely, 2^55628870 is an apocalyptic number.

55628870 is a deficient number, since it is larger than the sum of its proper divisors (53942746).

55628870 is a wasteful number, since it uses less digits than its factorization.

55628870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1576.

The product of its (nonzero) digits is 134400, while the sum is 41.

The square root of 55628870 is about 7458.4763859652. The cubic root of 55628870 is about 381.7391885818.

The spelling of 55628870 in words is "fifty-five million, six hundred twenty-eight thousand, eight hundred seventy".