45519912 has 24 divisors (see below), whose sum is σ = 123283290. Its totient is φ = 15173280.

The previous prime is 45519907. The next prime is 45519913. The reversal of 45519912 is 21991554.

45519912 is a `hidden beast` number, since 4 + 551 + 99 + 12 = 666.

It can be written as a sum of positive squares in only one way, i.e., 23561316 + 21958596 = 4854^2 + 4686^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (45519913) 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 5 ways as a sum of consecutive naturals, for example, 316039 + ... + 316182.

Almost surely, 2^45519912 is an apocalyptic number.

It is an amenable number.

45519912 is an abundant number, since it is smaller than the sum of its proper divisors (77763378).

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

45519912 is a wasteful number, since it uses less digits than its factorization.

45519912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 632233 (or 632226 counting only the distinct ones).

The product of its digits is 16200, while the sum is 36.

The square root of 45519912 is about 6746.8445958092. The cubic root of 45519912 is about 357.0539193092.

The spelling of 45519912 in words is "forty-five million, five hundred nineteen thousand, nine hundred twelve".