45251992 has 16 divisors (see below), whose sum is σ = 86043600. Its totient is φ = 22307040.

The previous prime is 45251989. The next prime is 45251993. The reversal of 45251992 is 29915254.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45251993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39267 + ... + 40402.

It is an arithmetic number, because the mean of its divisors is an integer number (5377725).

Almost surely, 2^45251992 is an apocalyptic number.

It is an amenable number.

45251992 is a deficient number, since it is larger than the sum of its proper divisors (40791608).

45251992 is a wasteful number, since it uses less digits than its factorization.

45251992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79746 (or 79742 counting only the distinct ones).

The product of its digits is 32400, while the sum is 37.

The square root of 45251992 is about 6726.9600861013. The cubic root of 45251992 is about 356.3520273281.

The spelling of 45251992 in words is "forty-five million, two hundred fifty-one thousand, nine hundred ninety-two".