72581063 has 2 divisors, whose sum is σ = 72581064. Its totient is φ = 72581062.

The previous prime is 72581059. The next prime is 72581141. The reversal of 72581063 is 36018527.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72581063 - 2² = 72581059 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72581023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36290531 + 36290532.

It is an arithmetic number, because the mean of its divisors is an integer number (36290532).

Almost surely, 2^72581063 is an apocalyptic number.

72581063 is a deficient number, since it is larger than the sum of its proper divisors (1).

72581063 is an equidigital number, since it uses as much as digits as its factorization.

72581063 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 72581063 is about 8519.4520363695. The cubic root of 72581063 is about 417.1328968538.

The spelling of 72581063 in words is "seventy-two million, five hundred eighty-one thousand, sixty-three".