45791561 has 2 divisors, whose sum is σ = 45791562. Its totient is φ = 45791560.

The previous prime is 45791519. The next prime is 45791563. The reversal of 45791561 is 16519754.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31990336 + 13801225 = 5656^2 + 3715^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45791561 is a prime.

Together with 45791563, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (45791563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22895780 + 22895781.

It is an arithmetic number, because the mean of its divisors is an integer number (22895781).

Almost surely, 2^45791561 is an apocalyptic number.

It is an amenable number.

45791561 is a deficient number, since it is larger than the sum of its proper divisors (1).

45791561 is an equidigital number, since it uses as much as digits as its factorization.

45791561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 37800, while the sum is 38.

The square root of 45791561 is about 6766.9462093325. The cubic root of 45791561 is about 357.7627741873.

The spelling of 45791561 in words is "forty-five million, seven hundred ninety-one thousand, five hundred sixty-one".