72252479 has 4 divisors (see below), whose sum is σ = 77810376. Its totient is φ = 66694584.

The previous prime is 72252473. The next prime is 72252529. The reversal of 72252479 is 97425227.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97425227 = 4153 ⋅23459.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72252479 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 (72252473) 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, 2778929 + ... + 2778954.

It is an arithmetic number, because the mean of its divisors is an integer number (19452594).

Almost surely, 2^72252479 is an apocalyptic number.

72252479 is a deficient number, since it is larger than the sum of its proper divisors (5557897).

72252479 is a wasteful number, since it uses less digits than its factorization.

72252479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5557896.

The product of its digits is 70560, while the sum is 38.

The square root of 72252479 is about 8500.1458222786. The cubic root of 72252479 is about 416.5024727631.

The spelling of 72252479 in words is "seventy-two million, two hundred fifty-two thousand, four hundred seventy-nine".