44657213 has 2 divisors, whose sum is σ = 44657214. Its totient is φ = 44657212.

The previous prime is 44657189. The next prime is 44657219. The reversal of 44657213 is 31275644.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43731769 + 925444 = 6613^2 + 962^2 .

It is a cyclic number.

It is not a de Polignac number, because 44657213 - 2⁶ = 44657149 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 44657213.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44657219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22328606 + 22328607.

It is an arithmetic number, because the mean of its divisors is an integer number (22328607).

Almost surely, 2^44657213 is an apocalyptic number.

It is an amenable number.

44657213 is a deficient number, since it is larger than the sum of its proper divisors (1).

44657213 is an equidigital number, since it uses as much as digits as its factorization.

44657213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20160, while the sum is 32.

The square root of 44657213 is about 6682.6052554374. The cubic root of 44657213 is about 354.7838742673.

The spelling of 44657213 in words is "forty-four million, six hundred fifty-seven thousand, two hundred thirteen".