55774590 has 32 divisors (see below), whose sum is σ = 134922240. Its totient is φ = 14755104.

The previous prime is 55774573. The next prime is 55774591. The reversal of 55774590 is 9547755.

It is a super-2 number, since 2×55774590² = 6221609779336200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55774591) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3510 + ... + 11129.

It is an arithmetic number, because the mean of its divisors is an integer number (4216320).

Almost surely, 2^55774590 is an apocalyptic number.

55774590 is an abundant number, since it is smaller than the sum of its proper divisors (79147650).

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

55774590 is a wasteful number, since it uses less digits than its factorization.

55774590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14776.

The product of its (nonzero) digits is 220500, while the sum is 42.

The square root of 55774590 is about 7468.2387481922. The cubic root of 55774590 is about 382.0722202936.

The spelling of 55774590 in words is "fifty-five million, seven hundred seventy-four thousand, five hundred ninety".