72254579 has 2 divisors, whose sum is σ = 72254580. Its totient is φ = 72254578.

The previous prime is 72254551. The next prime is 72254591. The reversal of 72254579 is 97545227.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72254579 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (72254519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36127289 + 36127290.

It is an arithmetic number, because the mean of its divisors is an integer number (36127290).

Almost surely, 2^72254579 is an apocalyptic number.

72254579 is a deficient number, since it is larger than the sum of its proper divisors (1).

72254579 is an equidigital number, since it uses as much as digits as its factorization.

72254579 is an evil number, because the sum of its binary digits is even.

The product of its digits is 176400, while the sum is 41.

The square root of 72254579 is about 8500.2693486736. The cubic root of 72254579 is about 416.5065079037.

The spelling of 72254579 in words is "seventy-two million, two hundred fifty-four thousand, five hundred seventy-nine".