56070621 has 6 divisors (see below), whose sum is σ = 80990910. Its totient is φ = 37380408.

The previous prime is 56070613. The next prime is 56070631. The reversal of 56070621 is 12607065.

It can be written as a sum of positive squares in only one way, i.e., 53494596 + 2576025 = 7314^2 + 1605^2 .

It is not a de Polignac number, because 56070621 - 2³ = 56070613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56070611) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3115026 + ... + 3115043.

It is an arithmetic number, because the mean of its divisors is an integer number (13498485).

Almost surely, 2^56070621 is an apocalyptic number.

It is an amenable number.

56070621 is a deficient number, since it is larger than the sum of its proper divisors (24920289).

56070621 is a wasteful number, since it uses less digits than its factorization.

56070621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6230075 (or 6230072 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 56070621 is about 7488.0318508938. The cubic root of 56070621 is about 382.7469941314.

Adding to 56070621 its reverse (12607065), we get a palindrome (68677686).

The spelling of 56070621 in words is "fifty-six million, seventy thousand, six hundred twenty-one".