56544749 has 4 divisors (see below), whose sum is σ = 57104700. Its totient is φ = 55984800.

The previous prime is 56544739. The next prime is 56544757. The reversal of 56544749 is 94744565.

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 51337225 + 5207524 = 7165^2 + 2282^2 .

It is a cyclic number.

It is not a de Polignac number, because 56544749 - 2⁸ = 56544493 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 (56544739) 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, 279824 + ... + 280025.

It is an arithmetic number, because the mean of its divisors is an integer number (14276175).

Almost surely, 2^56544749 is an apocalyptic number.

It is an amenable number.

56544749 is a deficient number, since it is larger than the sum of its proper divisors (559951).

56544749 is a wasteful number, since it uses less digits than its factorization.

56544749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 559950.

The product of its digits is 604800, while the sum is 44.

The square root of 56544749 is about 7519.6242592300. The cubic root of 56544749 is about 383.8227919507.

The spelling of 56544749 in words is "fifty-six million, five hundred forty-four thousand, seven hundred forty-nine".