56748409 has 4 divisors (see below), whose sum is σ = 56778640. Its totient is φ = 56718180.

The previous prime is 56748407. The next prime is 56748443. The reversal of 56748409 is 90484765.

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 a cyclic number.

It is not a de Polignac number, because 56748409 - 2¹ = 56748407 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56748407) 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, 12099 + ... + 16120.

It is an arithmetic number, because the mean of its divisors is an integer number (14194660).

Almost surely, 2^56748409 is an apocalyptic number.

It is an amenable number.

56748409 is a deficient number, since it is larger than the sum of its proper divisors (30231).

56748409 is a wasteful number, since it uses less digits than its factorization.

56748409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30230.

The product of its (nonzero) digits is 241920, while the sum is 43.

The square root of 56748409 is about 7533.1539875407. The cubic root of 56748409 is about 384.2830509476.

The spelling of 56748409 in words is "fifty-six million, seven hundred forty-eight thousand, four hundred nine".