45157690 has 32 divisors (see below), whose sum is σ = 83275920. Its totient is φ = 17625600.

The previous prime is 45157681. The next prime is 45157703. The reversal of 45157690 is 9675154.

It can be written as a sum of positive squares in 8 ways, for example, as 4363921 + 40793769 = 2089^2 + 6387^2 .

It is a super-2 number, since 2×45157690² = 4078433932272200, which contains 22 as substring.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax 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, 110206 + ... + 110614.

Almost surely, 2^45157690 is an apocalyptic number.

45157690 is a deficient number, since it is larger than the sum of its proper divisors (38118230).

45157690 is a wasteful number, since it uses less digits than its factorization.

45157690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 658.

The product of its (nonzero) digits is 37800, while the sum is 37.

The square root of 45157690 is about 6719.9471724114. The cubic root of 45157690 is about 356.1043175754.

The spelling of 45157690 in words is "forty-five million, one hundred fifty-seven thousand, six hundred ninety".