55769886 has 36 divisors (see below), whose sum is σ = 123269328. Its totient is φ = 18222672.

The previous prime is 55769873. The next prime is 55769897. The reversal of 55769886 is 68896755.

55769886 is a `hidden beast` number, since 557 + 6 + 9 + 8 + 86 = 666.

It is a super-2 number, since 2×55769886² = 6220560368905992, which contains 22 as substring.

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 17 ways as a sum of consecutive naturals, for example, 50011 + ... + 51113.

It is an arithmetic number, because the mean of its divisors is an integer number (3424148).

Almost surely, 2^55769886 is an apocalyptic number.

55769886 is an abundant number, since it is smaller than the sum of its proper divisors (67499442).

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

55769886 is a wasteful number, since it uses less digits than its factorization.

55769886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1217 (or 1161 counting only the distinct ones).

The product of its digits is 3628800, while the sum is 54.

The square root of 55769886 is about 7467.9238078599. The cubic root of 55769886 is about 382.0614787339.

The spelling of 55769886 in words is "fifty-five million, seven hundred sixty-nine thousand, eight hundred eighty-six".