72011579 has 2 divisors, whose sum is σ = 72011580. Its totient is φ = 72011578.

The previous prime is 72011549. The next prime is 72011587. The reversal of 72011579 is 97511027.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72011579 is a prime.

It is equal to p_4229294 and since 72011579 and 4229294 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (72011519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36005789 + 36005790.

It is an arithmetic number, because the mean of its divisors is an integer number (36005790).

Almost surely, 2^72011579 is an apocalyptic number.

72011579 is a deficient number, since it is larger than the sum of its proper divisors (1).

72011579 is an equidigital number, since it uses as much as digits as its factorization.

72011579 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4410, while the sum is 32.

The square root of 72011579 is about 8485.9636459273. The cubic root of 72011579 is about 416.0390646100.

The spelling of 72011579 in words is "seventy-two million, eleven thousand, five hundred seventy-nine".