72452717 has 4 divisors (see below), whose sum is σ = 73369920. Its totient is φ = 71535516.

The previous prime is 72452713. The next prime is 72452753. The reversal of 72452717 is 71725427.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 71725427 = 2003 ⋅35809.

It is a cyclic number.

It is not a de Polignac number, because 72452717 - 2² = 72452713 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 (72452713) 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, 458483 + ... + 458640.

It is an arithmetic number, because the mean of its divisors is an integer number (18342480).

Almost surely, 2^72452717 is an apocalyptic number.

It is an amenable number.

72452717 is a deficient number, since it is larger than the sum of its proper divisors (917203).

72452717 is an equidigital number, since it uses as much as digits as its factorization.

72452717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 917202.

The product of its digits is 27440, while the sum is 35.

The square root of 72452717 is about 8511.9161767489. The cubic root of 72452717 is about 416.8868780140.

The spelling of 72452717 in words is "seventy-two million, four hundred fifty-two thousand, seven hundred seventeen".