45909321 has 4 divisors (see below), whose sum is σ = 61212432. Its totient is φ = 30606212.

The previous prime is 45909319. The next prime is 45909329. The reversal of 45909321 is 12390954.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 45909321 - 2¹ = 45909319 is a prime.

It is not an unprimeable number, because it can be changed into a prime (45909329) 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, 7651551 + ... + 7651556.

It is an arithmetic number, because the mean of its divisors is an integer number (15303108).

Almost surely, 2^45909321 is an apocalyptic number.

It is an amenable number.

45909321 is a deficient number, since it is larger than the sum of its proper divisors (15303111).

45909321 is a wasteful number, since it uses less digits than its factorization.

45909321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15303110.

The product of its (nonzero) digits is 9720, while the sum is 33.

The square root of 45909321 is about 6775.6417408243. The cubic root of 45909321 is about 358.0691922272.

The spelling of 45909321 in words is "forty-five million, nine hundred nine thousand, three hundred twenty-one".