72222567 has 4 divisors (see below), whose sum is σ = 96296760. Its totient is φ = 48148376.

The previous prime is 72222551. The next prime is 72222569. The reversal of 72222567 is 76522227.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 72222567 - 2⁴ = 72222551 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72222569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12037092 + ... + 12037097.

It is an arithmetic number, because the mean of its divisors is an integer number (24074190).

Almost surely, 2^72222567 is an apocalyptic number.

72222567 is a deficient number, since it is larger than the sum of its proper divisors (24074193).

72222567 is a wasteful number, since it uses less digits than its factorization.

72222567 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24074192.

The product of its digits is 23520, while the sum is 33.

The square root of 72222567 is about 8498.3861409093. The cubic root of 72222567 is about 416.4449884998. Note that the first 3 decimals are identical.

The spelling of 72222567 in words is "seventy-two million, two hundred twenty-two thousand, five hundred sixty-seven".