45909121 has 2 divisors, whose sum is σ = 45909122. Its totient is φ = 45909120.

The previous prime is 45909107. The next prime is 45909167. The reversal of 45909121 is 12190954.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44742721 + 1166400 = 6689^2 + 1080^2 .

It is a cyclic number.

It is not a de Polignac number, because 45909121 - 2⁵ = 45909089 is a prime.

It is not a weakly prime, because it can be changed into another prime (45909181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22954560 + 22954561.

It is an arithmetic number, because the mean of its divisors is an integer number (22954561).

Almost surely, 2^45909121 is an apocalyptic number.

It is an amenable number.

45909121 is a deficient number, since it is larger than the sum of its proper divisors (1).

45909121 is an equidigital number, since it uses as much as digits as its factorization.

45909121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 31.

The square root of 45909121 is about 6775.6269820586. The cubic root of 45909121 is about 358.0686722606.

The spelling of 45909121 in words is "forty-five million, nine hundred nine thousand, one hundred twenty-one".