72727453 has 2 divisors, whose sum is σ = 72727454. Its totient is φ = 72727452.

The previous prime is 72727451. The next prime is 72727463. The reversal of 72727453 is 35472727.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40487769 + 32239684 = 6363^2 + 5678^2 .

It is a cyclic number.

It is not a de Polignac number, because 72727453 - 2¹ = 72727451 is a prime.

Together with 72727451, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72727451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36363726 + 36363727.

It is an arithmetic number, because the mean of its divisors is an integer number (36363727).

Almost surely, 2^72727453 is an apocalyptic number.

It is an amenable number.

72727453 is a deficient number, since it is larger than the sum of its proper divisors (1).

72727453 is an equidigital number, since it uses as much as digits as its factorization.

72727453 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82320, while the sum is 37.

The square root of 72727453 is about 8528.0392236434. The cubic root of 72727453 is about 417.4131493717.

The spelling of 72727453 in words is "seventy-two million, seven hundred twenty-seven thousand, four hundred fifty-three".