56604749 has 4 divisors (see below), whose sum is σ = 57449664. Its totient is φ = 55759836.

The previous prime is 56604739. The next prime is 56604761. The reversal of 56604749 is 94740665.

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, and also an emirpimes, since its reverse is a distinct semiprime: 94740665 = 5 ⋅18948133.

It is a cyclic number.

It is not a de Polignac number, because 56604749 - 2⁴ = 56604733 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 (56604739) 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, 422357 + ... + 422490.

It is an arithmetic number, because the mean of its divisors is an integer number (14362416).

Almost surely, 2^56604749 is an apocalyptic number.

It is an amenable number.

56604749 is a deficient number, since it is larger than the sum of its proper divisors (844915).

56604749 is an equidigital number, since it uses as much as digits as its factorization.

56604749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 844914.

The product of its (nonzero) digits is 181440, while the sum is 41.

The square root of 56604749 is about 7523.6127624965. The cubic root of 56604749 is about 383.9585029123.

The spelling of 56604749 in words is "fifty-six million, six hundred four thousand, seven hundred forty-nine".