72982957 has 2 divisors, whose sum is σ = 72982958. Its totient is φ = 72982956.

The previous prime is 72982951. The next prime is 72982967. The reversal of 72982957 is 75928927.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72233001 + 749956 = 8499^2 + 866^2 .

It is a cyclic number.

It is not a de Polignac number, because 72982957 - 2¹⁹ = 72458669 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72982957.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72982951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36491478 + 36491479.

It is an arithmetic number, because the mean of its divisors is an integer number (36491479).

Almost surely, 2^72982957 is an apocalyptic number.

It is an amenable number.

72982957 is a deficient number, since it is larger than the sum of its proper divisors (1).

72982957 is an equidigital number, since it uses as much as digits as its factorization.

72982957 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 635040, while the sum is 49.

The square root of 72982957 is about 8543.0063209622. The cubic root of 72982957 is about 417.9013926875.

The spelling of 72982957 in words is "seventy-two million, nine hundred eighty-two thousand, nine hundred fifty-seven".