56577403 has 4 divisors (see below), whose sum is σ = 58106560. Its totient is φ = 55048248.

The previous prime is 56577397. The next prime is 56577419. The reversal of 56577403 is 30477565.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56577403 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37), and also a Moran number because the ratio is a prime number: 1529119 = 56577403 / (5 + 6 + 5 + 7 + 7 + 4 + 0 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56577503) 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, 764523 + ... + 764596.

It is an arithmetic number, because the mean of its divisors is an integer number (14526640).

Almost surely, 2^56577403 is an apocalyptic number.

56577403 is a deficient number, since it is larger than the sum of its proper divisors (1529157).

56577403 is a wasteful number, since it uses less digits than its factorization.

56577403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1529156.

The product of its (nonzero) digits is 88200, while the sum is 37.

The square root of 56577403 is about 7521.7951979564. The cubic root of 56577403 is about 383.8966622795.

The spelling of 56577403 in words is "fifty-six million, five hundred seventy-seven thousand, four hundred three".