72565057 has 2 divisors, whose sum is σ = 72565058. Its totient is φ = 72565056.

The previous prime is 72565033. The next prime is 72565081. The reversal of 72565057 is 75056527.

It is a balanced prime because it is at equal distance from previous prime (72565033) and next prime (72565081).

It can be written as a sum of positive squares in only one way, i.e., 46799281 + 25765776 = 6841^2 + 5076^2 .

It is a cyclic number.

It is not a de Polignac number, because 72565057 - 2¹⁹ = 72040769 is a prime.

It is not a weakly prime, because it can be changed into another prime (72565657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36282528 + 36282529.

It is an arithmetic number, because the mean of its divisors is an integer number (36282529).

Almost surely, 2^72565057 is an apocalyptic number.

It is an amenable number.

72565057 is a deficient number, since it is larger than the sum of its proper divisors (1).

72565057 is an equidigital number, since it uses as much as digits as its factorization.

72565057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 73500, while the sum is 37.

The square root of 72565057 is about 8518.5126049094. The cubic root of 72565057 is about 417.1022317385.

The spelling of 72565057 in words is "seventy-two million, five hundred sixty-five thousand, fifty-seven".