56756549 has 4 divisors (see below), whose sum is σ = 56826336. Its totient is φ = 56686764.

The previous prime is 56756537. The next prime is 56756561. The reversal of 56756549 is 94565765.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (56756537) and next prime (56756561).

It is a cyclic number.

It is not a de Polignac number, because 56756549 - 2⁴ = 56756533 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 (56756569) 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, 33659 + ... + 35304.

It is an arithmetic number, because the mean of its divisors is an integer number (14206584).

Almost surely, 2^56756549 is an apocalyptic number.

It is an amenable number.

56756549 is a deficient number, since it is larger than the sum of its proper divisors (69787).

56756549 is an equidigital number, since it uses as much as digits as its factorization.

56756549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69786.

The product of its digits is 1134000, while the sum is 47.

The square root of 56756549 is about 7533.6942465168. The cubic root of 56756549 is about 384.3014239413.

The spelling of 56756549 in words is "fifty-six million, seven hundred fifty-six thousand, five hundred forty-nine".