45646561 has 2 divisors, whose sum is σ = 45646562. Its totient is φ = 45646560.

The previous prime is 45646529. The next prime is 45646577. The reversal of 45646561 is 16564654.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45643536 + 3025 = 6756^2 + 55^2 .

It is a cyclic number.

It is not a de Polignac number, because 45646561 - 2⁵ = 45646529 is a prime.

It is a super-2 number, since 2×45646561² = 4167217062253442, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 45646561.

It is not a weakly prime, because it can be changed into another prime (45646501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22823280 + 22823281.

It is an arithmetic number, because the mean of its divisors is an integer number (22823281).

Almost surely, 2^45646561 is an apocalyptic number.

It is an amenable number.

45646561 is a deficient number, since it is larger than the sum of its proper divisors (1).

45646561 is an equidigital number, since it uses as much as digits as its factorization.

45646561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 86400, while the sum is 37.

The square root of 45646561 is about 6756.2238713648. The cubic root of 45646561 is about 357.3847536326.

The spelling of 45646561 in words is "forty-five million, six hundred forty-six thousand, five hundred sixty-one".