45749257 has 2 divisors, whose sum is σ = 45749258. Its totient is φ = 45749256.

The previous prime is 45749243. The next prime is 45749281. The reversal of 45749257 is 75294754.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41100921 + 4648336 = 6411^2 + 2156^2 .

It is a cyclic number.

It is not a de Polignac number, because 45749257 - 2⁷ = 45749129 is a prime.

It is not a weakly prime, because it can be changed into another prime (45749237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22874628 + 22874629.

It is an arithmetic number, because the mean of its divisors is an integer number (22874629).

Almost surely, 2^45749257 is an apocalyptic number.

It is an amenable number.

45749257 is a deficient number, since it is larger than the sum of its proper divisors (1).

45749257 is an equidigital number, since it uses as much as digits as its factorization.

45749257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 352800, while the sum is 43.

The square root of 45749257 is about 6763.8197048709. The cubic root of 45749257 is about 357.6525685864.

It can be divided in two parts, 4574 and 9257, that added together give a palindrome (13831).

The spelling of 45749257 in words is "forty-five million, seven hundred forty-nine thousand, two hundred fifty-seven".