45623561 has 2 divisors, whose sum is σ = 45623562. Its totient is φ = 45623560.

The previous prime is 45623551. The next prime is 45623569. The reversal of 45623561 is 16532654.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27510025 + 18113536 = 5245^2 + 4256^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45623561 is a prime.

It is not a weakly prime, because it can be changed into another prime (45623569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22811780 + 22811781.

It is an arithmetic number, because the mean of its divisors is an integer number (22811781).

Almost surely, 2^45623561 is an apocalyptic number.

It is an amenable number.

45623561 is a deficient number, since it is larger than the sum of its proper divisors (1).

45623561 is an equidigital number, since it uses as much as digits as its factorization.

45623561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21600, while the sum is 32.

The square root of 45623561 is about 6754.5215226543. The cubic root of 45623561 is about 357.3247182205.

The spelling of 45623561 in words is "forty-five million, six hundred twenty-three thousand, five hundred sixty-one".