45509718 has 16 divisors (see below), whose sum is σ = 91169136. Its totient is φ = 15144960.

The previous prime is 45509707. The next prime is 45509749. The reversal of 45509718 is 81790554.

It is a super-2 number, since 2×45509718² = 4142268864879048, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2071 + ... + 9762.

It is an arithmetic number, because the mean of its divisors is an integer number (5698071).

Almost surely, 2^45509718 is an apocalyptic number.

45509718 is an abundant number, since it is smaller than the sum of its proper divisors (45659418).

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

45509718 is a wasteful number, since it uses less digits than its factorization.

45509718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12479.

The product of its (nonzero) digits is 50400, while the sum is 39.

The square root of 45509718 is about 6746.0890892427. The cubic root of 45509718 is about 357.0272637261.

The spelling of 45509718 in words is "forty-five million, five hundred nine thousand, seven hundred eighteen".