45519994 has 8 divisors (see below), whose sum is σ = 73532340. Its totient is φ = 21009216.

The previous prime is 45519989. The next prime is 45520019. The reversal of 45519994 is 49991554.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 45064369 + 455625 = 6713^2 + 675^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 875359 + ... + 875410.

Almost surely, 2^45519994 is an apocalyptic number.

45519994 is a deficient number, since it is larger than the sum of its proper divisors (28012346).

45519994 is a wasteful number, since it uses less digits than its factorization.

45519994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1750784.

The product of its digits is 291600, while the sum is 46.

The square root of 45519994 is about 6746.8506727213. The cubic root of 45519994 is about 357.0541337092.

It can be divided in two parts, 455 and 19994, that added together give a square (20449 = 143²).

The spelling of 45519994 in words is "forty-five million, five hundred nineteen thousand, nine hundred ninety-four".