72549187 has 2 divisors, whose sum is σ = 72549188. Its totient is φ = 72549186.

The previous prime is 72549161. The next prime is 72549227. The reversal of 72549187 is 78194527.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72549187 - 2¹⁵ = 72516419 is a prime.

It is not a weakly prime, because it can be changed into another prime (72549287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36274593 + 36274594.

It is an arithmetic number, because the mean of its divisors is an integer number (36274594).

Almost surely, 2^72549187 is an apocalyptic number.

72549187 is a deficient number, since it is larger than the sum of its proper divisors (1).

72549187 is an equidigital number, since it uses as much as digits as its factorization.

72549187 is an evil number, because the sum of its binary digits is even.

The product of its digits is 141120, while the sum is 43.

The square root of 72549187 is about 8517.5810533273. The cubic root of 72549187 is about 417.0718227266.

The spelling of 72549187 in words is "seventy-two million, five hundred forty-nine thousand, one hundred eighty-seven".