45637992 has 40 divisors (see below), whose sum is σ = 127830450. Its totient is φ = 15212448.

The previous prime is 45637951. The next prime is 45637993. The reversal of 45637992 is 29973654.

It is a happy number.

45637992 is a `hidden beast` number, since 4 + 5 + 637 + 9 + 9 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 39012516 + 6625476 = 6246^2 + 2574^2 .

It is not an unprimeable number, because it can be changed into a prime (45637993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 34567 + ... + 35862.

Almost surely, 2^45637992 is an apocalyptic number.

It is an amenable number.

45637992 is an abundant number, since it is smaller than the sum of its proper divisors (82192458).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

45637992 is a wasteful number, since it uses less digits than its factorization.

45637992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70447 (or 70434 counting only the distinct ones).

The product of its digits is 408240, while the sum is 45.

The square root of 45637992 is about 6755.5896855863. The cubic root of 45637992 is about 357.3623888839.

The spelling of 45637992 in words is "forty-five million, six hundred thirty-seven thousand, nine hundred ninety-two".