56757493 has 4 divisors (see below), whose sum is σ = 61123468. Its totient is φ = 52391520.

The previous prime is 56757479. The next prime is 56757517. The reversal of 56757493 is 39475765.

56757493 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5963364 + 50794129 = 2442^2 + 7127^2 .

It is a cyclic number.

It is not a de Polignac number, because 56757493 - 2⁵ = 56757461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56757403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2182968 + ... + 2182993.

It is an arithmetic number, because the mean of its divisors is an integer number (15280867).

Almost surely, 2^56757493 is an apocalyptic number.

It is an amenable number.

56757493 is a deficient number, since it is larger than the sum of its proper divisors (4365975).

56757493 is a wasteful number, since it uses less digits than its factorization.

56757493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4365974.

The product of its digits is 793800, while the sum is 46.

The square root of 56757493 is about 7533.7568981219. The cubic root of 56757493 is about 384.3035545531.

The spelling of 56757493 in words is "fifty-six million, seven hundred fifty-seven thousand, four hundred ninety-three".