56020331 has 4 divisors (see below), whose sum is σ = 57534432. Its totient is φ = 54506232.

The previous prime is 56020301. The next prime is 56020337. The reversal of 56020331 is 13302065.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 56020331 - 2¹⁰ = 56019307 is a prime.

It is a super-2 number, since 2×56020331² = 6276554970699122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56020337) 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, 756995 + ... + 757068.

It is an arithmetic number, because the mean of its divisors is an integer number (14383608).

Almost surely, 2^56020331 is an apocalyptic number.

56020331 is a deficient number, since it is larger than the sum of its proper divisors (1514101).

56020331 is a wasteful number, since it uses less digits than its factorization.

56020331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1514100.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 56020331 is about 7484.6730723526. The cubic root of 56020331 is about 382.6325307190.

Adding to 56020331 its reverse (13302065), we get a palindrome (69322396).

The spelling of 56020331 in words is "fifty-six million, twenty thousand, three hundred thirty-one".