1057155165 has 32 divisors (see below), whose sum is σ = 2050243200. Its totient is φ = 512559360.

The previous prime is 1057155163. The next prime is 1057155191. The reversal of 1057155165 is 5615517501.

It is a happy number.

It is not a de Polignac number, because 1057155165 - 2¹ = 1057155163 is a prime.

It is a super-2 number, since 2×1057155165² = 2235154085772354450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1057155163) 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, 354460 + ... + 357429.

It is an arithmetic number, because the mean of its divisors is an integer number (64070100).

Almost surely, 2^1057155165 is an apocalyptic number.

1057155165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1057155165 is a deficient number, since it is larger than the sum of its proper divisors (993088035).

1057155165 is a wasteful number, since it uses less digits than its factorization.

1057155165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 711914 (or 711908 counting only the distinct ones).

The product of its (nonzero) digits is 26250, while the sum is 36.

The square root of 1057155165 is about 32513.9226332351. The cubic root of 1057155165 is about 1018.6998573185.

It can be divided in two parts, 10 and 57155165, that added together give a palindrome (57155175).

The spelling of 1057155165 in words is "one billion, fifty-seven million, one hundred fifty-five thousand, one hundred sixty-five".