56343021 has 16 divisors (see below), whose sum is σ = 86158464. Its totient is φ = 32082624.

The previous prime is 56343013. The next prime is 56343041. The reversal of 56343021 is 12034365.

It is a happy number.

It is not a de Polignac number, because 56343021 - 2³ = 56343013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 56342982 and 56343000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56343041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1575 + ... + 10731.

It is an arithmetic number, because the mean of its divisors is an integer number (5384904).

Almost surely, 2^56343021 is an apocalyptic number.

It is an amenable number.

56343021 is a deficient number, since it is larger than the sum of its proper divisors (29815443).

56343021 is a wasteful number, since it uses less digits than its factorization.

56343021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9460.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 56343021 is about 7506.1988382936. The cubic root of 56343021 is about 383.3658083808.

Adding to 56343021 its reverse (12034365), we get a palindrome (68377386).

The spelling of 56343021 in words is "fifty-six million, three hundred forty-three thousand, twenty-one".