45139132 has 18 divisors (see below), whose sum is σ = 80002104. Its totient is φ = 22282920.

The previous prime is 45139091. The next prime is 45139141. The reversal of 45139132 is 23193154.

It is a self number, because there is not a number n which added to its sum of digits gives 45139132.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 136207 + ... + 136537.

Almost surely, 2^45139132 is an apocalyptic number.

It is an amenable number.

45139132 is a deficient number, since it is larger than the sum of its proper divisors (34862972).

45139132 is a wasteful number, since it uses less digits than its factorization.

45139132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 769 (or 436 counting only the distinct ones).

The product of its digits is 3240, while the sum is 28.

The square root of 45139132 is about 6718.5662160910. The cubic root of 45139132 is about 356.0555293593.

The spelling of 45139132 in words is "forty-five million, one hundred thirty-nine thousand, one hundred thirty-two".