72546571 has 2 divisors, whose sum is σ = 72546572. Its totient is φ = 72546570.

The previous prime is 72546563. The next prime is 72546581. The reversal of 72546571 is 17564527.

It is a weak prime.

It is an emirp because it is prime and its reverse (17564527) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72546571 - 2³ = 72546563 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72546571.

It is not a weakly prime, because it can be changed into another prime (72546511) 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, 36273285 + 36273286.

It is an arithmetic number, because the mean of its divisors is an integer number (36273286).

Almost surely, 2^72546571 is an apocalyptic number.

72546571 is a deficient number, since it is larger than the sum of its proper divisors (1).

72546571 is an equidigital number, since it uses as much as digits as its factorization.

72546571 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 58800, while the sum is 37.

The square root of 72546571 is about 8517.4274872170. The cubic root of 72546571 is about 417.0668097001.

The spelling of 72546571 in words is "seventy-two million, five hundred forty-six thousand, five hundred seventy-one".