55797087 has 4 divisors (see below), whose sum is σ = 74396120. Its totient is φ = 37198056.

The previous prime is 55797083. The next prime is 55797107. The reversal of 55797087 is 78079755.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 55797087 - 2² = 55797083 is a prime.

It is a super-2 number, since 2×55797087² = 6226629835371138, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55797083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9299512 + ... + 9299517.

It is an arithmetic number, because the mean of its divisors is an integer number (18599030).

Almost surely, 2^55797087 is an apocalyptic number.

55797087 is a deficient number, since it is larger than the sum of its proper divisors (18599033).

55797087 is a wasteful number, since it uses less digits than its factorization.

55797087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18599032.

The product of its (nonzero) digits is 617400, while the sum is 48.

The square root of 55797087 is about 7469.7447747564. The cubic root of 55797087 is about 382.1235837270.

The spelling of 55797087 in words is "fifty-five million, seven hundred ninety-seven thousand, eighty-seven".