45043657 has 2 divisors, whose sum is σ = 45043658. Its totient is φ = 45043656.

The previous prime is 45043643. The next prime is 45043673. The reversal of 45043657 is 75634054.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44302336 + 741321 = 6656^2 + 861^2 .

It is a cyclic number.

It is not a de Polignac number, because 45043657 - 2⁷ = 45043529 is a prime.

It is not a weakly prime, because it can be changed into another prime (45043627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22521828 + 22521829.

It is an arithmetic number, because the mean of its divisors is an integer number (22521829).

Almost surely, 2^45043657 is an apocalyptic number.

It is an amenable number.

45043657 is a deficient number, since it is larger than the sum of its proper divisors (1).

45043657 is an equidigital number, since it uses as much as digits as its factorization.

45043657 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 50400, while the sum is 34.

The square root of 45043657 is about 6711.4571443167. The cubic root of 45043657 is about 355.8043179318.

The spelling of 45043657 in words is "forty-five million, forty-three thousand, six hundred fifty-seven".