45171915 has 16 divisors (see below), whose sum is σ = 72430848. Its totient is φ = 24039776.

The previous prime is 45171913. The next prime is 45171923. The reversal of 45171915 is 51917154.

It is a cyclic number.

It is not a de Polignac number, because 45171915 - 2¹ = 45171913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (45171913) 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, 4552 + ... + 10538.

It is an arithmetic number, because the mean of its divisors is an integer number (4526928).

Almost surely, 2^45171915 is an apocalyptic number.

45171915 is a deficient number, since it is larger than the sum of its proper divisors (27258933).

45171915 is a wasteful number, since it uses less digits than its factorization.

45171915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6498.

The product of its digits is 6300, while the sum is 33.

The square root of 45171915 is about 6721.0055051309. The cubic root of 45171915 is about 356.1417054645.

The spelling of 45171915 in words is "forty-five million, one hundred seventy-one thousand, nine hundred fifteen".