72512879 has 4 divisors (see below), whose sum is σ = 72532200. Its totient is φ = 72493560.

The previous prime is 72512863. The next prime is 72512917. The reversal of 72512879 is 97821527.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97821527 = 839 ⋅116593.

It is a cyclic number.

It is not a de Polignac number, because 72512879 - 2⁴ = 72512863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72512819) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2012 + ... + 12209.

It is an arithmetic number, because the mean of its divisors is an integer number (18133050).

Almost surely, 2^72512879 is an apocalyptic number.

72512879 is a deficient number, since it is larger than the sum of its proper divisors (19321).

72512879 is a wasteful number, since it uses less digits than its factorization.

72512879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19320.

The product of its digits is 70560, while the sum is 41.

The square root of 72512879 is about 8515.4494303002. The cubic root of 72512879 is about 417.0022351304.

The spelling of 72512879 in words is "seventy-two million, five hundred twelve thousand, eight hundred seventy-nine".