1071657057 has 32 divisors (see below), whose sum is σ = 1552320000. Its totient is φ = 655378560.

The previous prime is 1071657001. The next prime is 1071657071. The reversal of 1071657057 is 7507561701.

It is not a de Polignac number, because 1071657057 - 2⁸ = 1071656801 is a prime.

It is a super-2 number, since 2×1071657057² = 2296897695635802498, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1071657157) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 323194 + ... + 326492.

It is an arithmetic number, because the mean of its divisors is an integer number (48510000).

Almost surely, 2^1071657057 is an apocalyptic number.

It is an amenable number.

1071657057 is a deficient number, since it is larger than the sum of its proper divisors (480662943).

1071657057 is a wasteful number, since it uses less digits than its factorization.

1071657057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3501.

The product of its (nonzero) digits is 51450, while the sum is 39.

The square root of 1071657057 is about 32736.1735241002. The cubic root of 1071657057 is about 1023.3368410390.

The spelling of 1071657057 in words is "one billion, seventy-one million, six hundred fifty-seven thousand, fifty-seven".