72230539 has 2 divisors, whose sum is σ = 72230540. Its totient is φ = 72230538.

The previous prime is 72230537. The next prime is 72230563. The reversal of 72230539 is 93503227.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72230539 - 2¹ = 72230537 is a prime.

Together with 72230537, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72230539.

It is not a weakly prime, because it can be changed into another prime (72230537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36115269 + 36115270.

It is an arithmetic number, because the mean of its divisors is an integer number (36115270).

Almost surely, 2^72230539 is an apocalyptic number.

72230539 is a deficient number, since it is larger than the sum of its proper divisors (1).

72230539 is an equidigital number, since it uses as much as digits as its factorization.

72230539 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11340, while the sum is 31.

The square root of 72230539 is about 8498.8551581963. The cubic root of 72230539 is about 416.4603104757.

The spelling of 72230539 in words is "seventy-two million, two hundred thirty thousand, five hundred thirty-nine".