1577157057 has 24 divisors (see below), whose sum is σ = 2607400640. Its totient is φ = 899903520.

The previous prime is 1577157041. The next prime is 1577157059. The reversal of 1577157057 is 7507517751.

1577157057 is a `hidden beast` number, since 1 + 5 + 7 + 71 + 570 + 5 + 7 = 666.

It is not a de Polignac number, because 1577157057 - 2⁴ = 1577157041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1577157059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25419 + ... + 61647.

Almost surely, 2^1577157057 is an apocalyptic number.

It is an amenable number.

1577157057 is a deficient number, since it is larger than the sum of its proper divisors (1030243583).

1577157057 is a wasteful number, since it uses less digits than its factorization.

1577157057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36933 (or 36930 counting only the distinct ones).

The product of its (nonzero) digits is 300125, while the sum is 45.

The square root of 1577157057 is about 39713.4367311619. The cubic root of 1577157057 is about 1164.0142968627.

The spelling of 1577157057 in words is "one billion, five hundred seventy-seven million, one hundred fifty-seven thousand, fifty-seven".