72244057 has 2 divisors, whose sum is σ = 72244058. Its totient is φ = 72244056.

The previous prime is 72244027. The next prime is 72244063. The reversal of 72244057 is 75044227.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56791296 + 15452761 = 7536^2 + 3931^2 .

It is a cyclic number.

It is not a de Polignac number, because 72244057 - 2¹⁵ = 72211289 is a prime.

It is not a weakly prime, because it can be changed into another prime (72244027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36122028 + 36122029.

It is an arithmetic number, because the mean of its divisors is an integer number (36122029).

Almost surely, 2^72244057 is an apocalyptic number.

It is an amenable number.

72244057 is a deficient number, since it is larger than the sum of its proper divisors (1).

72244057 is an equidigital number, since it uses as much as digits as its factorization.

72244057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15680, while the sum is 31.

The square root of 72244057 is about 8499.6504045755. The cubic root of 72244057 is about 416.4862891425.

The spelling of 72244057 in words is "seventy-two million, two hundred forty-four thousand, fifty-seven".