45571918 has 48 divisors (see below), whose sum is σ = 84271104. Its totient is φ = 18098640.

The previous prime is 45571909. The next prime is 45571921. The reversal of 45571918 is 81917554.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 358771 + ... + 358897.

It is an arithmetic number, because the mean of its divisors is an integer number (1755648).

Almost surely, 2^45571918 is an apocalyptic number.

45571918 is a deficient number, since it is larger than the sum of its proper divisors (38699186).

45571918 is a wasteful number, since it uses less digits than its factorization.

45571918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245 (or 226 counting only the distinct ones).

The product of its digits is 50400, while the sum is 40.

The square root of 45571918 is about 6750.6975935825. The cubic root of 45571918 is about 357.1898442865.

The spelling of 45571918 in words is "forty-five million, five hundred seventy-one thousand, nine hundred eighteen".