45366561 has 10 divisors (see below), whose sum is σ = 67769922. Its totient is φ = 30244320.

The previous prime is 45366553. The next prime is 45366577. The reversal of 45366561 is 16566354.

45366561 is a `hidden beast` number, since 4 + 536 + 65 + 61 = 666.

It can be written as a sum of positive squares in only one way, i.e., 30735936 + 14630625 = 5544^2 + 3825^2 .

It is not a de Polignac number, because 45366561 - 2³ = 45366553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (45365561) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 279960 + ... + 280121.

Almost surely, 2^45366561 is an apocalyptic number.

It is an amenable number.

45366561 is a deficient number, since it is larger than the sum of its proper divisors (22403361).

45366561 is an equidigital number, since it uses as much as digits as its factorization.

45366561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560093 (or 560084 counting only the distinct ones).

The product of its digits is 64800, while the sum is 36.

The square root of 45366561 is about 6735.4703621945. The cubic root of 45366561 is about 356.6525112539.

The spelling of 45366561 in words is "forty-five million, three hundred sixty-six thousand, five hundred sixty-one".