45447561 has 12 divisors (see below), whose sum is σ = 68078192. Its totient is φ = 30298212.

The previous prime is 45447551. The next prime is 45447593. The reversal of 45447561 is 16574454.

45447561 is a `hidden beast` number, since 4 + 54 + 47 + 561 = 666.

It is not a de Polignac number, because 45447561 - 2¹¹ = 45445513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45447551) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 93271 + ... + 93756.

Almost surely, 2^45447561 is an apocalyptic number.

It is an amenable number.

45447561 is a deficient number, since it is larger than the sum of its proper divisors (22630631).

45447561 is an equidigital number, since it uses as much as digits as its factorization.

45447561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187042 (or 187030 counting only the distinct ones).

The product of its digits is 67200, while the sum is 36.

The square root of 45447561 is about 6741.4806237206. The cubic root of 45447561 is about 356.8646475098.

The spelling of 45447561 in words is "forty-five million, four hundred forty-seven thousand, five hundred sixty-one".