72147587 has 2 divisors, whose sum is σ = 72147588. Its totient is φ = 72147586.

The previous prime is 72147553. The next prime is 72147599. The reversal of 72147587 is 78574127.

It is a strong prime.

It is an emirp because it is prime and its reverse (78574127) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72147587 - 2²⁰ = 71099011 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (72147547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36073793 + 36073794.

It is an arithmetic number, because the mean of its divisors is an integer number (36073794).

Almost surely, 2^72147587 is an apocalyptic number.

72147587 is a deficient number, since it is larger than the sum of its proper divisors (1).

72147587 is an equidigital number, since it uses as much as digits as its factorization.

72147587 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 109760, while the sum is 41.

The square root of 72147587 is about 8493.9735695374. The cubic root of 72147587 is about 416.3008236932.

The spelling of 72147587 in words is "seventy-two million, one hundred forty-seven thousand, five hundred eighty-seven".