45191955 has 16 divisors (see below), whose sum is σ = 74640384. Its totient is φ = 23324640.

The previous prime is 45191953. The next prime is 45191959. The reversal of 45191955 is 55919154.

It is not a de Polignac number, because 45191955 - 2¹ = 45191953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (45191953) 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, 48129 + ... + 49058.

It is an arithmetic number, because the mean of its divisors is an integer number (4665024).

Almost surely, 2^45191955 is an apocalyptic number.

45191955 is a deficient number, since it is larger than the sum of its proper divisors (29448429).

45191955 is a wasteful number, since it uses less digits than its factorization.

45191955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97226.

The product of its digits is 40500, while the sum is 39.

The square root of 45191955 is about 6722.4961881730. The cubic root of 45191955 is about 356.1943637339.

The spelling of 45191955 in words is "forty-five million, one hundred ninety-one thousand, nine hundred fifty-five".