1057523715 has 32 divisors (see below), whose sum is σ = 1944878400. Its totient is φ = 544561920.

The previous prime is 1057523713. The next prime is 1057523749. The reversal of 1057523715 is 5173257501.

It is a happy number.

1057523715 is a `hidden beast` number, since 10 + 57 + 523 + 71 + 5 = 666.

It is not a de Polignac number, because 1057523715 - 2¹ = 1057523713 is a prime.

It is a super-2 number, since 2×1057523715² = 2236712815574802450, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1057523715.

It is not an unprimeable number, because it can be changed into a prime (1057523713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 131146 + ... + 138975.

It is an arithmetic number, because the mean of its divisors is an integer number (60777450).

Almost surely, 2^1057523715 is an apocalyptic number.

1057523715 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1057523715 is a deficient number, since it is larger than the sum of its proper divisors (887354685).

1057523715 is a wasteful number, since it uses less digits than its factorization.

1057523715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270164 (or 270158 counting only the distinct ones).

The product of its (nonzero) digits is 36750, while the sum is 36.

The square root of 1057523715 is about 32519.5897114339. The cubic root of 1057523715 is about 1018.8182247458.

The spelling of 1057523715 in words is "one billion, fifty-seven million, five hundred twenty-three thousand, seven hundred fifteen".