45087291 has 24 divisors (see below), whose sum is σ = 68490240. Its totient is φ = 28526256.

The previous prime is 45087283. The next prime is 45087313. The reversal of 45087291 is 19278054.

It is not a de Polignac number, because 45087291 - 2³ = 45087283 is a prime.

It is not an unprimeable number, because it can be changed into a prime (45087271) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27990 + ... + 29556.

It is an arithmetic number, because the mean of its divisors is an integer number (2853760).

Almost surely, 2^45087291 is an apocalyptic number.

45087291 is a deficient number, since it is larger than the sum of its proper divisors (23402949).

45087291 is a wasteful number, since it uses less digits than its factorization.

45087291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1735 (or 1732 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 45087291 is about 6714.7070673262. The cubic root of 45087291 is about 355.9191706194.

The spelling of 45087291 in words is "forty-five million, eighty-seven thousand, two hundred ninety-one".