56274221 has 2 divisors, whose sum is σ = 56274222. Its totient is φ = 56274220.

The previous prime is 56274209. The next prime is 56274319. The reversal of 56274221 is 12247265.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40386025 + 15888196 = 6355^2 + 3986^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56274221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56274121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28137110 + 28137111.

It is an arithmetic number, because the mean of its divisors is an integer number (28137111).

Almost surely, 2^56274221 is an apocalyptic number.

It is an amenable number.

56274221 is a deficient number, since it is larger than the sum of its proper divisors (1).

56274221 is an equidigital number, since it uses as much as digits as its factorization.

56274221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6720, while the sum is 29.

The square root of 56274221 is about 7501.6145595465. The cubic root of 56274221 is about 383.2097032111.

The spelling of 56274221 in words is "fifty-six million, two hundred seventy-four thousand, two hundred twenty-one".