55792881 has 20 divisors (see below), whose sum is σ = 84409600. Its totient is φ = 36720216.

The previous prime is 55792879. The next prime is 55792883. The reversal of 55792881 is 18829755.

It is a happy number.

55792881 is a `hidden beast` number, since 557 + 92 + 8 + 8 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (55792879) and next prime (55792883).

It is not a de Polignac number, because 55792881 - 2¹ = 55792879 is a prime.

It is a super-2 number, since 2×55792881² = 6225691140560322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (55792883) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2040 + ... + 10758.

It is an arithmetic number, because the mean of its divisors is an integer number (4220480).

Almost surely, 2^55792881 is an apocalyptic number.

It is an amenable number.

55792881 is a deficient number, since it is larger than the sum of its proper divisors (28616719).

55792881 is an equidigital number, since it uses as much as digits as its factorization.

55792881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8810 (or 8801 counting only the distinct ones).

The product of its digits is 201600, while the sum is 45.

The square root of 55792881 is about 7469.4632337270. The cubic root of 55792881 is about 382.1139819582.

It can be divided in two parts, 557928 and 81, that added together give a square (558009 = 747²).

The spelling of 55792881 in words is "fifty-five million, seven hundred ninety-two thousand, eight hundred eighty-one".