55920838 has 32 divisors (see below), whose sum is σ = 93680640. Its totient is φ = 24922080.

The previous prime is 55920829. The next prime is 55920841. The reversal of 55920838 is 83802955.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 55920838.

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, 42945 + ... + 44227.

It is an arithmetic number, because the mean of its divisors is an integer number (2927520).

Almost surely, 2^55920838 is an apocalyptic number.

55920838 is a deficient number, since it is larger than the sum of its proper divisors (37759802).

55920838 is a wasteful number, since it uses less digits than its factorization.

55920838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1372.

The product of its (nonzero) digits is 86400, while the sum is 40.

The square root of 55920838 is about 7478.0236693929. The cubic root of 55920838 is about 382.4058759959.

The spelling of 55920838 in words is "fifty-five million, nine hundred twenty thousand, eight hundred thirty-eight".