72285539 has 2 divisors, whose sum is σ = 72285540. Its totient is φ = 72285538.

The previous prime is 72285497. The next prime is 72285559. The reversal of 72285539 is 93558227.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72285539 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 72285496 and 72285505.

It is not a weakly prime, because it can be changed into another prime (72285559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36142769 + 36142770.

It is an arithmetic number, because the mean of its divisors is an integer number (36142770).

Almost surely, 2^72285539 is an apocalyptic number.

72285539 is a deficient number, since it is larger than the sum of its proper divisors (1).

72285539 is an equidigital number, since it uses as much as digits as its factorization.

72285539 is an evil number, because the sum of its binary digits is even.

The product of its digits is 151200, while the sum is 41.

The square root of 72285539 is about 8502.0902723977. The cubic root of 72285539 is about 416.5659883330.

The spelling of 72285539 in words is "seventy-two million, two hundred eighty-five thousand, five hundred thirty-nine".