72741511 has 2 divisors, whose sum is σ = 72741512. Its totient is φ = 72741510.

The previous prime is 72741497. The next prime is 72741523. The reversal of 72741511 is 11514727.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72741511 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72741511.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72741551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36370755 + 36370756.

It is an arithmetic number, because the mean of its divisors is an integer number (36370756).

Almost surely, 2^72741511 is an apocalyptic number.

72741511 is a deficient number, since it is larger than the sum of its proper divisors (1).

72741511 is an equidigital number, since it uses as much as digits as its factorization.

72741511 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1960, while the sum is 28.

The square root of 72741511 is about 8528.8634061052. The cubic root of 72741511 is about 417.4400425451.

The spelling of 72741511 in words is "seventy-two million, seven hundred forty-one thousand, five hundred eleven".