45185972 has 24 divisors (see below), whose sum is σ = 87908352. Its totient is φ = 20181600.

The previous prime is 45185963. The next prime is 45185989. The reversal of 45185972 is 27958154.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12404 + ... + 15627.

It is an arithmetic number, because the mean of its divisors is an integer number (3662848).

Almost surely, 2^45185972 is an apocalyptic number.

It is an amenable number.

45185972 is a deficient number, since it is larger than the sum of its proper divisors (42722380).

45185972 is a wasteful number, since it uses less digits than its factorization.

45185972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28079 (or 28077 counting only the distinct ones).

The product of its digits is 100800, while the sum is 41.

The square root of 45185972 is about 6722.0511750507. The cubic root of 45185972 is about 356.1786440855.

The spelling of 45185972 in words is "forty-five million, one hundred eighty-five thousand, nine hundred seventy-two".