55920887 has 16 divisors (see below), whose sum is σ = 62118144. Its totient is φ = 49920000.

The previous prime is 55920859. The next prime is 55920923. The reversal of 55920887 is 78802955.

It is a cyclic number.

It is not a de Polignac number, because 55920887 - 2¹⁶ = 55855351 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55920817) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 217463 + ... + 217719.

It is an arithmetic number, because the mean of its divisors is an integer number (3882384).

Almost surely, 2^55920887 is an apocalyptic number.

55920887 is a deficient number, since it is larger than the sum of its proper divisors (6197257).

55920887 is a wasteful number, since it uses less digits than its factorization.

55920887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550.

The product of its (nonzero) digits is 201600, while the sum is 44.

The square root of 55920887 is about 7478.0269456589. The cubic root of 55920887 is about 382.4059876888.

The spelling of 55920887 in words is "fifty-five million, nine hundred twenty thousand, eight hundred eighty-seven".