1157057057 has 8 divisors (see below), whose sum is σ = 1246701120. Its totient is φ = 1067504400.

The previous prime is 1157057053. The next prime is 1157057087. The reversal of 1157057057 is 7507507511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1157057057 - 2² = 1157057053 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1157057057.

It is not an unprimeable number, because it can be changed into a prime (1157057053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4682 + ... + 48332.

It is an arithmetic number, because the mean of its divisors is an integer number (155837640).

Almost surely, 2^1157057057 is an apocalyptic number.

It is an amenable number.

1157057057 is a deficient number, since it is larger than the sum of its proper divisors (89644063).

1157057057 is a wasteful number, since it uses less digits than its factorization.

1157057057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45703.

The product of its (nonzero) digits is 42875, while the sum is 38.

The square root of 1157057057 is about 34015.5414038936. The cubic root of 1157057057 is about 1049.8282582298.

The spelling of 1157057057 in words is "one billion, one hundred fifty-seven million, fifty-seven thousand, fifty-seven".