45519940 has 48 divisors (see below), whose sum is σ = 97977600. Its totient is φ = 17760512.

The previous prime is 45519919. The next prime is 45519941. The reversal of 45519940 is 4991554.

It is a self number, because there is not a number n which added to its sum of digits gives 45519940.

It is not an unprimeable number, because it can be changed into a prime (45519941) 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 15 ways as a sum of consecutive naturals, for example, 190341 + ... + 190579.

It is an arithmetic number, because the mean of its divisors is an integer number (2041200).

Almost surely, 2^45519940 is an apocalyptic number.

It is an amenable number.

45519940 is an abundant number, since it is smaller than the sum of its proper divisors (52457660).

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

45519940 is a wasteful number, since it uses less digits than its factorization.

45519940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444 (or 442 counting only the distinct ones).

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

The square root of 45519940 is about 6746.8466708530. The cubic root of 45519940 is about 357.0539925190.

The spelling of 45519940 in words is "forty-five million, five hundred nineteen thousand, nine hundred forty".