45136561 has 2 divisors, whose sum is σ = 45136562. Its totient is φ = 45136560.

The previous prime is 45136517. The next prime is 45136601. The reversal of 45136561 is 16563154.

45136561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43970161 + 1166400 = 6631^2 + 1080^2 .

It is a cyclic number.

It is not a de Polignac number, because 45136561 - 2⁷ = 45136433 is a prime.

It is not a weakly prime, because it can be changed into another prime (45136361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22568280 + 22568281.

It is an arithmetic number, because the mean of its divisors is an integer number (22568281).

Almost surely, 2^45136561 is an apocalyptic number.

It is an amenable number.

45136561 is a deficient number, since it is larger than the sum of its proper divisors (1).

45136561 is an equidigital number, since it uses as much as digits as its factorization.

45136561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10800, while the sum is 31.

The square root of 45136561 is about 6718.3748779002. The cubic root of 45136561 is about 356.0487692519.

The spelling of 45136561 in words is "forty-five million, one hundred thirty-six thousand, five hundred sixty-one".