56552390 has 16 divisors (see below), whose sum is σ = 101927808. Its totient is φ = 22591296.

The previous prime is 56552381. The next prime is 56552399. The reversal of 56552390 is 9325565.

It is an interprime number because it is at equal distance from previous prime (56552381) and next prime (56552399).

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 56552390.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56552399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5354 + ... + 11906.

It is an arithmetic number, because the mean of its divisors is an integer number (6370488).

Almost surely, 2^56552390 is an apocalyptic number.

56552390 is a deficient number, since it is larger than the sum of its proper divisors (45375418).

56552390 is a wasteful number, since it uses less digits than its factorization.

56552390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7423.

The product of its (nonzero) digits is 40500, while the sum is 35.

The square root of 56552390 is about 7520.1323126658. The cubic root of 56552390 is about 383.8400800745.

The spelling of 56552390 in words is "fifty-six million, five hundred fifty-two thousand, three hundred ninety".