1557150057 has 24 divisors (see below), whose sum is σ = 2342366208. Its totient is φ = 995702400.

The previous prime is 1557150053. The next prime is 1557150103. The reversal of 1557150057 is 7500517551.

1557150057 is a `hidden beast` number, since 1 + 557 + 1 + 50 + 0 + 57 = 666.

It is not a de Polignac number, because 1557150057 - 2² = 1557150053 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1557150053) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6832 + ... + 56222.

It is an arithmetic number, because the mean of its divisors is an integer number (97598592).

Almost surely, 2^1557150057 is an apocalyptic number.

It is an amenable number.

1557150057 is a deficient number, since it is larger than the sum of its proper divisors (785216151).

1557150057 is a wasteful number, since it uses less digits than its factorization.

1557150057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49541 (or 49538 counting only the distinct ones).

The product of its (nonzero) digits is 30625, while the sum is 36.

The square root of 1557150057 is about 39460.7407051616. The cubic root of 1557150057 is about 1159.0713080682.

The spelling of 1557150057 in words is "one billion, five hundred fifty-seven million, one hundred fifty thousand, fifty-seven".