45712239 has 4 divisors (see below), whose sum is σ = 60949656. Its totient is φ = 30474824.

The previous prime is 45712231. The next prime is 45712301. The reversal of 45712239 is 93221754.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 45712239 - 2³ = 45712231 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45712231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7618704 + ... + 7618709.

It is an arithmetic number, because the mean of its divisors is an integer number (15237414).

Almost surely, 2^45712239 is an apocalyptic number.

45712239 is a deficient number, since it is larger than the sum of its proper divisors (15237417).

45712239 is a wasteful number, since it uses less digits than its factorization.

45712239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15237416.

The product of its digits is 15120, while the sum is 33.

The square root of 45712239 is about 6761.0826795714. The cubic root of 45712239 is about 357.5560777273.

The spelling of 45712239 in words is "forty-five million, seven hundred twelve thousand, two hundred thirty-nine".