56270521 has 2 divisors, whose sum is σ = 56270522. Its totient is φ = 56270520.

The previous prime is 56270503. The next prime is 56270537. The reversal of 56270521 is 12507265.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37994896 + 18275625 = 6164^2 + 4275^2 .

It is a cyclic number.

It is not a de Polignac number, because 56270521 - 2²³ = 47881913 is a prime.

It is a super-2 number, since 2×56270521² = 6332743067222882, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 56270521.

It is not a weakly prime, because it can be changed into another prime (56270021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28135260 + 28135261.

It is an arithmetic number, because the mean of its divisors is an integer number (28135261).

Almost surely, 2^56270521 is an apocalyptic number.

It is an amenable number.

56270521 is a deficient number, since it is larger than the sum of its proper divisors (1).

56270521 is an equidigital number, since it uses as much as digits as its factorization.

56270521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 56270521 is about 7501.3679419157. The cubic root of 56270521 is about 383.2013044159.

Adding to 56270521 its reverse (12507265), we get a palindrome (68777786).

The spelling of 56270521 in words is "fifty-six million, two hundred seventy thousand, five hundred twenty-one".