45445923 has 12 divisors (see below), whose sum is σ = 65768040. Its totient is φ = 30240096.

The previous prime is 45445921. The next prime is 45445943. The reversal of 45445923 is 32954454.

It is a happy number.

It is not a de Polignac number, because 45445923 - 2¹ = 45445921 is a prime.

It is not an unprimeable number, because it can be changed into a prime (45445921) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 583 + ... + 9551.

It is an arithmetic number, because the mean of its divisors is an integer number (5480670).

Almost surely, 2^45445923 is an apocalyptic number.

45445923 is a deficient number, since it is larger than the sum of its proper divisors (20322117).

45445923 is a wasteful number, since it uses less digits than its factorization.

45445923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9538 (or 9535 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

The square root of 45445923 is about 6741.3591359606. The cubic root of 45445923 is about 356.8603601414.

The spelling of 45445923 in words is "forty-five million, four hundred forty-five thousand, nine hundred twenty-three".