45657221 has 16 divisors (see below), whose sum is σ = 48009024. Its totient is φ = 43390464.

The previous prime is 45657211. The next prime is 45657229. The reversal of 45657221 is 12275654.

It is not a de Polignac number, because 45657221 - 2¹⁰ = 45656197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45657229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 426650 + ... + 426756.

It is an arithmetic number, because the mean of its divisors is an integer number (3000564).

Almost surely, 2^45657221 is an apocalyptic number.

It is an amenable number.

45657221 is a deficient number, since it is larger than the sum of its proper divisors (2351803).

45657221 is a wasteful number, since it uses less digits than its factorization.

45657221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340.

The product of its digits is 16800, while the sum is 32.

The square root of 45657221 is about 6757.0127275298. The cubic root of 45657221 is about 357.4125719017.

The spelling of 45657221 in words is "forty-five million, six hundred fifty-seven thousand, two hundred twenty-one".