45718321 has 32 divisors (see below), whose sum is σ = 55520640. Its totient is φ = 37171200.

The previous prime is 45718307. The next prime is 45718339. The reversal of 45718321 is 12381754.

It is not a de Polignac number, because 45718321 - 2⁵ = 45718289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (45718021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 513645 + ... + 513733.

It is an arithmetic number, because the mean of its divisors is an integer number (1735020).

Almost surely, 2^45718321 is an apocalyptic number.

45718321 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

45718321 is a deficient number, since it is larger than the sum of its proper divisors (9802319).

45718321 is a wasteful number, since it uses less digits than its factorization.

45718321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225.

The product of its digits is 6720, while the sum is 31.

The square root of 45718321 is about 6761.5324446460. The cubic root of 45718321 is about 357.5719346012.

The spelling of 45718321 in words is "forty-five million, seven hundred eighteen thousand, three hundred twenty-one".