45665261 has 2 divisors, whose sum is σ = 45665262. Its totient is φ = 45665260.

The previous prime is 45665209. The next prime is 45665297. The reversal of 45665261 is 16256654.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44809636 + 855625 = 6694^2 + 925^2 .

It is a cyclic number.

It is not a de Polignac number, because 45665261 - 2⁶ = 45665197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45665161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22832630 + 22832631.

It is an arithmetic number, because the mean of its divisors is an integer number (22832631).

Almost surely, 2^45665261 is an apocalyptic number.

It is an amenable number.

45665261 is a deficient number, since it is larger than the sum of its proper divisors (1).

45665261 is an equidigital number, since it uses as much as digits as its factorization.

45665261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43200, while the sum is 35.

The square root of 45665261 is about 6757.6076388024. The cubic root of 45665261 is about 357.4335501709.

The spelling of 45665261 in words is "forty-five million, six hundred sixty-five thousand, two hundred sixty-one".