1571225057 has 2 divisors, whose sum is σ = 1571225058. Its totient is φ = 1571225056.

The previous prime is 1571225021. The next prime is 1571225069. The reversal of 1571225057 is 7505221751.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1448259136 + 122965921 = 38056^2 + 11089^2 .

It is a cyclic number.

It is not a de Polignac number, because 1571225057 - 2¹⁴ = 1571208673 is a prime.

It is not a weakly prime, because it can be changed into another prime (1571525057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 785612528 + 785612529.

It is an arithmetic number, because the mean of its divisors is an integer number (785612529).

Almost surely, 2^1571225057 is an apocalyptic number.

It is an amenable number.

1571225057 is a deficient number, since it is larger than the sum of its proper divisors (1).

1571225057 is an equidigital number, since it uses as much as digits as its factorization.

1571225057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24500, while the sum is 35.

The square root of 1571225057 is about 39638.6813226676. The cubic root of 1571225057 is about 1162.5531006230.

The spelling of 1571225057 in words is "one billion, five hundred seventy-one million, two hundred twenty-five thousand, fifty-seven".