56703921 has 8 divisors (see below), whose sum is σ = 75650784. Its totient is φ = 37779840.

The previous prime is 56703917. The next prime is 56703967. The reversal of 56703921 is 12930765.

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

It is not a de Polignac number, because 56703921 - 2² = 56703917 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (56703121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1366 + ... + 10736.

It is an arithmetic number, because the mean of its divisors is an integer number (9456348).

Almost surely, 2^56703921 is an apocalyptic number.

It is an amenable number.

56703921 is a deficient number, since it is larger than the sum of its proper divisors (18946863).

56703921 is a wasteful number, since it uses less digits than its factorization.

56703921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11391.

The product of its (nonzero) digits is 11340, while the sum is 33.

The square root of 56703921 is about 7530.2005949377. The cubic root of 56703921 is about 384.1826049375.

It can be divided in two parts, 5670 and 3921, that added together give a triangular number (9591 = T₁₃₈).

The spelling of 56703921 in words is "fifty-six million, seven hundred three thousand, nine hundred twenty-one".