45757729 has 2 divisors, whose sum is σ = 45757730. Its totient is φ = 45757728.

The previous prime is 45757721. The next prime is 45757799. The reversal of 45757729 is 92775754.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30547729 + 15210000 = 5527^2 + 3900^2 .

It is a cyclic number.

It is not a de Polignac number, because 45757729 - 2³ = 45757721 is a prime.

It is not a weakly prime, because it can be changed into another prime (45757721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22878864 + 22878865.

It is an arithmetic number, because the mean of its divisors is an integer number (22878865).

Almost surely, 2^45757729 is an apocalyptic number.

It is an amenable number.

45757729 is a deficient number, since it is larger than the sum of its proper divisors (1).

45757729 is an equidigital number, since it uses as much as digits as its factorization.

45757729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 617400, while the sum is 46.

The square root of 45757729 is about 6764.4459492260. The cubic root of 45757729 is about 357.6746443223.

The spelling of 45757729 in words is "forty-five million, seven hundred fifty-seven thousand, seven hundred twenty-nine".