72514821 has 8 divisors (see below), whose sum is σ = 96740224. Its totient is φ = 48316320.

The previous prime is 72514789. The next prime is 72514831. The reversal of 72514821 is 12841527.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 72514821 - 2⁵ = 72514789 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 (72514831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 756 + ... + 12066.

It is an arithmetic number, because the mean of its divisors is an integer number (12092528).

Almost surely, 2^72514821 is an apocalyptic number.

It is an amenable number.

72514821 is a deficient number, since it is larger than the sum of its proper divisors (24225403).

72514821 is a wasteful number, since it uses less digits than its factorization.

72514821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13451.

The product of its digits is 4480, while the sum is 30.

The square root of 72514821 is about 8515.5634575758. The cubic root of 72514821 is about 417.0059577385.

The spelling of 72514821 in words is "seventy-two million, five hundred fourteen thousand, eight hundred twenty-one".