45357921 has 64 divisors (see below), whose sum is σ = 85708800. Its totient is φ = 23079168.

The previous prime is 45357913. The next prime is 45357937. The reversal of 45357921 is 12975354.

It is not a de Polignac number, because 45357921 - 2³ = 45357913 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (45357901) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 60676 + ... + 61418.

It is an arithmetic number, because the mean of its divisors is an integer number (1339200).

Almost surely, 2^45357921 is an apocalyptic number.

It is an amenable number.

45357921 is a deficient number, since it is larger than the sum of its proper divisors (40350879).

45357921 is a wasteful number, since it uses less digits than its factorization.

45357921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 795 (or 789 counting only the distinct ones).

The product of its digits is 37800, while the sum is 36.

The square root of 45357921 is about 6734.8289510573. The cubic root of 45357921 is about 356.6298684874.

The spelling of 45357921 in words is "forty-five million, three hundred fifty-seven thousand, nine hundred twenty-one".