45061561 has 2 divisors, whose sum is σ = 45061562. Its totient is φ = 45061560.

The previous prime is 45061553. The next prime is 45061567. The reversal of 45061561 is 16516054.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38007225 + 7054336 = 6165^2 + 2656^2 .

It is a cyclic number.

It is not a de Polignac number, because 45061561 - 2³ = 45061553 is a prime.

It is not a weakly prime, because it can be changed into another prime (45061567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22530780 + 22530781.

It is an arithmetic number, because the mean of its divisors is an integer number (22530781).

Almost surely, 2^45061561 is an apocalyptic number.

It is an amenable number.

45061561 is a deficient number, since it is larger than the sum of its proper divisors (1).

45061561 is an equidigital number, since it uses as much as digits as its factorization.

45061561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 45061561 is about 6712.7908503096. The cubic root of 45061561 is about 355.8514535116.

The spelling of 45061561 in words is "forty-five million, sixty-one thousand, five hundred sixty-one".