72221459 has 8 divisors (see below), whose sum is σ = 74216688. Its totient is φ = 70237440.

The previous prime is 72221441. The next prime is 72221473. The reversal of 72221459 is 95412227.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72221459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72221419) 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, 11204 + ... + 16430.

It is an arithmetic number, because the mean of its divisors is an integer number (9277086).

Almost surely, 2^72221459 is an apocalyptic number.

72221459 is a deficient number, since it is larger than the sum of its proper divisors (1995229).

72221459 is a wasteful number, since it uses less digits than its factorization.

72221459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5605.

The product of its digits is 10080, while the sum is 32.

The square root of 72221459 is about 8498.3209518116. The cubic root of 72221459 is about 416.4428588635.

The spelling of 72221459 in words is "seventy-two million, two hundred twenty-one thousand, four hundred fifty-nine".