45561865 has 16 divisors (see below), whose sum is σ = 56972160. Its totient is φ = 34948480.

The previous prime is 45561839. The next prime is 45561869. The reversal of 45561865 is 56816554.

It is not a de Polignac number, because 45561865 - 2⁵ = 45561833 is a prime.

It is not an unprimeable number, because it can be changed into a prime (45561869) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10212 + ... + 13978.

It is an arithmetic number, because the mean of its divisors is an integer number (3560760).

Almost surely, 2^45561865 is an apocalyptic number.

It is an amenable number.

45561865 is a deficient number, since it is larger than the sum of its proper divisors (11410295).

45561865 is a wasteful number, since it uses less digits than its factorization.

45561865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3872.

The product of its digits is 144000, while the sum is 40.

The square root of 45561865 is about 6749.9529627991. The cubic root of 45561865 is about 357.1635774264.

The spelling of 45561865 in words is "forty-five million, five hundred sixty-one thousand, eight hundred sixty-five".