56621053 has 2 divisors, whose sum is σ = 56621054. Its totient is φ = 56621052.

The previous prime is 56621051. The next prime is 56621069. The reversal of 56621053 is 35012665.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55920484 + 700569 = 7478^2 + 837^2 .

It is a cyclic number.

It is not a de Polignac number, because 56621053 - 2¹ = 56621051 is a prime.

Together with 56621051, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56621051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28310526 + 28310527.

It is an arithmetic number, because the mean of its divisors is an integer number (28310527).

Almost surely, 2^56621053 is an apocalyptic number.

It is an amenable number.

56621053 is a deficient number, since it is larger than the sum of its proper divisors (1).

56621053 is an equidigital number, since it uses as much as digits as its factorization.

56621053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 56621053 is about 7524.6962064923. The cubic root of 56621053 is about 383.9953635327.

The spelling of 56621053 in words is "fifty-six million, six hundred twenty-one thousand, fifty-three".