55765806 has 16 divisors (see below), whose sum is σ = 112111824. Its totient is φ = 18491904.

The previous prime is 55765789. The next prime is 55765819. The reversal of 55765806 is 60856755.

It is a Curzon number.

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, 22921 + ... + 25236.

It is an arithmetic number, because the mean of its divisors is an integer number (7006989).

Almost surely, 2^55765806 is an apocalyptic number.

55765806 is an abundant number, since it is smaller than the sum of its proper divisors (56346018).

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

55765806 is a wasteful number, since it uses less digits than its factorization.

55765806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48355.

The product of its (nonzero) digits is 252000, while the sum is 42.

The square root of 55765806 is about 7467.6506345704. The cubic root of 55765806 is about 382.0521615859.

The spelling of 55765806 in words is "fifty-five million, seven hundred sixty-five thousand, eight hundred six".