1057517765 has 16 divisors (see below), whose sum is σ = 1283968560. Its totient is φ = 836075520.

The previous prime is 1057517737. The next prime is 1057517771. The reversal of 1057517765 is 5677157501.

It can be written as a sum of positive squares in 8 ways, for example, as 18164644 + 1039353121 = 4262^2 + 32239^2 .

It is not a de Polignac number, because 1057517765 - 2¹⁴ = 1057501381 is a prime.

It is a super-2 number, since 2×1057517765² = 2236687646581190450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 488285 + ... + 490445.

It is an arithmetic number, because the mean of its divisors is an integer number (80248035).

Almost surely, 2^1057517765 is an apocalyptic number.

It is an amenable number.

1057517765 is a deficient number, since it is larger than the sum of its proper divisors (226450795).

1057517765 is a wasteful number, since it uses less digits than its factorization.

1057517765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3272.

The product of its (nonzero) digits is 257250, while the sum is 44.

The square root of 1057517765 is about 32519.4982279862. The cubic root of 1057517765 is about 1018.8163139991.

The spelling of 1057517765 in words is "one billion, fifty-seven million, five hundred seventeen thousand, seven hundred sixty-five".