56254081021 has 2 divisors, whose sum is σ = 56254081022. Its totient is φ = 56254081020.

The previous prime is 56254081001. The next prime is 56254081031. The reversal of 56254081021 is 12018045265.

It is a happy number.

56254081021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28590075396 + 27664005625 = 169086^2 + 166325^2 .

It is a cyclic number.

It is not a de Polignac number, because 56254081021 - 2¹³ = 56254072829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56254081001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28127040510 + 28127040511.

It is an arithmetic number, because the mean of its divisors is an integer number (28127040511).

Almost surely, 2^56254081021 is an apocalyptic number.

It is an amenable number.

56254081021 is a deficient number, since it is larger than the sum of its proper divisors (1).

56254081021 is an equidigital number, since it uses as much as digits as its factorization.

56254081021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19200, while the sum is 34.

The spelling of 56254081021 in words is "fifty-six billion, two hundred fifty-four million, eighty-one thousand, twenty-one".