56749823 has 16 divisors (see below), whose sum is σ = 63329280. Its totient is φ = 50512896.

The previous prime is 56749801. The next prime is 56749831. The reversal of 56749823 is 32894765.

It is a cyclic number.

It is not a de Polignac number, because 56749823 - 2²² = 52555519 is a prime.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56749853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60623 + ... + 61551.

It is an arithmetic number, because the mean of its divisors is an integer number (3958080).

Almost surely, 2^56749823 is an apocalyptic number.

56749823 is a deficient number, since it is larger than the sum of its proper divisors (6579457).

56749823 is a wasteful number, since it uses less digits than its factorization.

56749823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1106.

The product of its digits is 362880, while the sum is 44.

The square root of 56749823 is about 7533.2478387479. The cubic root of 56749823 is about 384.2862426477.

The spelling of 56749823 in words is "fifty-six million, seven hundred forty-nine thousand, eight hundred twenty-three".