1057243515 has 16 divisors (see below), whose sum is σ = 1791095328. Its totient is φ = 530694656.

The previous prime is 1057243489. The next prime is 1057243519. The reversal of 1057243515 is 5153427501.

1057243515 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 1057243515 - 2⁵ = 1057243483 is a prime.

It is a super-2 number, since 2×1057243515² = 2235527700019110450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1057243519) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2072772 + ... + 2073281.

It is an arithmetic number, because the mean of its divisors is an integer number (111943458).

Almost surely, 2^1057243515 is an apocalyptic number.

1057243515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1057243515 is a deficient number, since it is larger than the sum of its proper divisors (733851813).

1057243515 is a wasteful number, since it uses less digits than its factorization.

1057243515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4146078.

The product of its (nonzero) digits is 21000, while the sum is 33.

The square root of 1057243515 is about 32515.2812535891. The cubic root of 1057243515 is about 1018.7282352483.

The spelling of 1057243515 in words is "one billion, fifty-seven million, two hundred forty-three thousand, five hundred fifteen".