57121452251 has 2 divisors, whose sum is σ = 57121452252. Its totient is φ = 57121452250.

The previous prime is 57121452211. The next prime is 57121452317. The reversal of 57121452251 is 15225412175.

57121452251 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 57121452251 - 2⁶ = 57121452187 is a prime.

It is not a weakly prime, because it can be changed into another prime (57121452211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28560726125 + 28560726126.

It is an arithmetic number, because the mean of its divisors is an integer number (28560726126).

Almost surely, 2^57121452251 is an apocalyptic number.

57121452251 is a deficient number, since it is larger than the sum of its proper divisors (1).

57121452251 is an equidigital number, since it uses as much as digits as its factorization.

57121452251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28000, while the sum is 35.

The spelling of 57121452251 in words is "fifty-seven billion, one hundred twenty-one million, four hundred fifty-two thousand, two hundred fifty-one".