1057515145 has 8 divisors (see below), whose sum is σ = 1269307080. Its totient is φ = 845819520.

The previous prime is 1057515113. The next prime is 1057515163. The reversal of 1057515145 is 5415157501.

It can be written as a sum of positive squares in 4 ways, for example, as 198556281 + 858958864 = 14091^2 + 29308^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1057515145 - 2⁵ = 1057515113 is a prime.

It is a super-2 number, since 2×1057515145² = 2236676563808742050, 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 1057515145.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2815 + ... + 46075.

It is an arithmetic number, because the mean of its divisors is an integer number (158663385).

Almost surely, 2^1057515145 is an apocalyptic number.

It is an amenable number.

1057515145 is a deficient number, since it is larger than the sum of its proper divisors (211791935).

1057515145 is an equidigital number, since it uses as much as digits as its factorization.

1057515145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48155.

The product of its (nonzero) digits is 17500, while the sum is 34.

The square root of 1057515145 is about 32519.4579444369. The cubic root of 1057515145 is about 1018.8154726260.

The spelling of 1057515145 in words is "one billion, fifty-seven million, five hundred fifteen thousand, one hundred forty-five".