55990773 has 24 divisors (see below), whose sum is σ = 83397600. Its totient is φ = 36177120.

The previous prime is 55990751. The next prime is 55990787. The reversal of 55990773 is 37709955.

It is a happy number.

55990773 is a `hidden beast` number, since 559 + 90 + 7 + 7 + 3 = 666.

It is not a de Polignac number, because 55990773 - 2²⁵ = 22436341 is a prime.

It is a super-2 number, since 2×55990773² = 6269933322275058, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55990703) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 57178 + ... + 58148.

It is an arithmetic number, because the mean of its divisors is an integer number (3474900).

Almost surely, 2^55990773 is an apocalyptic number.

It is an amenable number.

55990773 is a deficient number, since it is larger than the sum of its proper divisors (27406827).

55990773 is a wasteful number, since it uses less digits than its factorization.

55990773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1169 (or 1166 counting only the distinct ones).

The product of its (nonzero) digits is 297675, while the sum is 45.

The square root of 55990773 is about 7482.6982432810. The cubic root of 55990773 is about 382.5652227622.

The spelling of 55990773 in words is "fifty-five million, nine hundred ninety thousand, seven hundred seventy-three".