45639291 has 8 divisors (see below), whose sum is σ = 63498240. Its totient is φ = 29103272.

The previous prime is 45639287. The next prime is 45639313. The reversal of 45639291 is 19293654.

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

It is a cyclic number.

It is not a de Polignac number, because 45639291 - 2² = 45639287 is a prime.

It is not an unprimeable number, because it can be changed into a prime (45639091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 330651 + ... + 330788.

It is an arithmetic number, because the mean of its divisors is an integer number (7937280).

Almost surely, 2^45639291 is an apocalyptic number.

45639291 is a deficient number, since it is larger than the sum of its proper divisors (17858949).

45639291 is a wasteful number, since it uses less digits than its factorization.

45639291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 661465.

The product of its digits is 58320, while the sum is 39.

The square root of 45639291 is about 6755.6858275086. The cubic root of 45639291 is about 357.3657794022.

The spelling of 45639291 in words is "forty-five million, six hundred thirty-nine thousand, two hundred ninety-one".