72222851 has 8 divisors (see below), whose sum is σ = 77613840. Its totient is φ = 66958848.

The previous prime is 72222823. The next prime is 72222863. The reversal of 72222851 is 15822227.

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

It is a cyclic number.

It is not a de Polignac number, because 72222851 - 2²² = 68028547 is a prime.

It is a super-2 number, since 2×72222851² = 10432280413136402, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (72222811) 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, 30566 + ... + 32843.

It is an arithmetic number, because the mean of its divisors is an integer number (9701730).

Almost surely, 2^72222851 is an apocalyptic number.

72222851 is a deficient number, since it is larger than the sum of its proper divisors (5390989).

72222851 is a wasteful number, since it uses less digits than its factorization.

72222851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63493.

The product of its digits is 4480, while the sum is 29.

The square root of 72222851 is about 8498.4028499477. The cubic root of 72222851 is about 416.4455343597.

The spelling of 72222851 in words is "seventy-two million, two hundred twenty-two thousand, eight hundred fifty-one".