56397783 has 8 divisors (see below), whose sum is σ = 80981488. Its totient is φ = 34706304.

The previous prime is 56397769. The next prime is 56397797. The reversal of 56397783 is 38779365.

It is an interprime number because it is at equal distance from previous prime (56397769) and next prime (56397797).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 56397783 - 2⁴ = 56397767 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 (56397703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 723010 + ... + 723087.

It is an arithmetic number, because the mean of its divisors is an integer number (10122686).

Almost surely, 2^56397783 is an apocalyptic number.

56397783 is a deficient number, since it is larger than the sum of its proper divisors (24583705).

56397783 is a wasteful number, since it uses less digits than its factorization.

56397783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1446113.

The product of its digits is 952560, while the sum is 48.

The square root of 56397783 is about 7509.8457374303. The cubic root of 56397783 is about 383.4899709367.

It can be divided in two parts, 563 and 97783, that added together give a triangular number (98346 = T₄₄₃).

The spelling of 56397783 in words is "fifty-six million, three hundred ninety-seven thousand, seven hundred eighty-three".