55912490 has 16 divisors (see below), whose sum is σ = 106562952. Its totient is φ = 21049344.

The previous prime is 55912481. The next prime is 55912501. The reversal of 55912490 is 9421955.

It can be written as a sum of positive squares in 4 ways, for example, as 48874081 + 7038409 = 6991^2 + 2653^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 55912490.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 164279 + ... + 164618.

Almost surely, 2^55912490 is an apocalyptic number.

55912490 is a deficient number, since it is larger than the sum of its proper divisors (50650462).

55912490 is a wasteful number, since it uses less digits than its factorization.

55912490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328921.

The product of its (nonzero) digits is 16200, while the sum is 35.

The square root of 55912490 is about 7477.4654796930. The cubic root of 55912490 is about 382.3868462195.

The spelling of 55912490 in words is "fifty-five million, nine hundred twelve thousand, four hundred ninety".