56020031 has 4 divisors (see below), whose sum is σ = 56130600. Its totient is φ = 55909464.

The previous prime is 56020001. The next prime is 56020039. The reversal of 56020031 is 13002065.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56020031 is a prime.

It is a super-2 number, since 2×56020031² = 6276487746481922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56019991 and 56020009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56020039) 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, 54521 + ... + 55538.

It is an arithmetic number, because the mean of its divisors is an integer number (14032650).

Almost surely, 2^56020031 is an apocalyptic number.

56020031 is a deficient number, since it is larger than the sum of its proper divisors (110569).

56020031 is a wasteful number, since it uses less digits than its factorization.

56020031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110568.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 56020031 is about 7484.6530313703. The cubic root of 56020031 is about 382.6318476934.

Adding to 56020031 its reverse (13002065), we get a palindrome (69022096).

The spelling of 56020031 in words is "fifty-six million, twenty thousand, thirty-one".