56491769 has 4 divisors (see below), whose sum is σ = 59465040. Its totient is φ = 53518500.

The previous prime is 56491753. The next prime is 56491777. The reversal of 56491769 is 96719465.

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 56491769 - 2⁴ = 56491753 is a prime.

It is a super-2 number, since 2×56491769² = 6382639929498722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56490769) 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, 1486607 + ... + 1486644.

It is an arithmetic number, because the mean of its divisors is an integer number (14866260).

Almost surely, 2^56491769 is an apocalyptic number.

It is an amenable number.

56491769 is a deficient number, since it is larger than the sum of its proper divisors (2973271).

56491769 is a wasteful number, since it uses less digits than its factorization.

56491769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2973270.

The product of its digits is 408240, while the sum is 47.

The square root of 56491769 is about 7516.1006512686. The cubic root of 56491769 is about 383.7028793377.

The spelling of 56491769 in words is "fifty-six million, four hundred ninety-one thousand, seven hundred sixty-nine".