72741523 has 2 divisors, whose sum is σ = 72741524. Its totient is φ = 72741522.

The previous prime is 72741511. The next prime is 72741533. The reversal of 72741523 is 32514727.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72741523 - 2⁵ = 72741491 is a prime.

It is not a weakly prime, because it can be changed into another prime (72741533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36370761 + 36370762.

It is an arithmetic number, because the mean of its divisors is an integer number (36370762).

Almost surely, 2^72741523 is an apocalyptic number.

72741523 is a deficient number, since it is larger than the sum of its proper divisors (1).

72741523 is an equidigital number, since it uses as much as digits as its factorization.

72741523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11760, while the sum is 31.

The square root of 72741523 is about 8528.8641095987. The cubic root of 72741523 is about 417.4400654998.

The spelling of 72741523 in words is "seventy-two million, seven hundred forty-one thousand, five hundred twenty-three".