45561680 has 40 divisors (see below), whose sum is σ = 106278912. Its totient is φ = 18164864.

The previous prime is 45561671. The next prime is 45561727. The reversal of 45561680 is 8616554.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 45561680.

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, 29897 + ... + 31383.

Almost surely, 2^45561680 is an apocalyptic number.

45561680 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

45561680 is an abundant number, since it is smaller than the sum of its proper divisors (60717232).

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

45561680 is a wasteful number, since it uses less digits than its factorization.

45561680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1883 (or 1877 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 35.

The square root of 45561680 is about 6749.9392589860. The cubic root of 45561680 is about 357.1630940152.

The spelling of 45561680 in words is "forty-five million, five hundred sixty-one thousand, six hundred eighty".