72622255 has 4 divisors (see below), whose sum is σ = 87146712. Its totient is φ = 58097800.

The previous prime is 72622241. The next prime is 72622271. The reversal of 72622255 is 55222627.

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

It is not a de Polignac number, because 72622255 - 2⁵ = 72622223 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7262221 + ... + 7262230.

It is an arithmetic number, because the mean of its divisors is an integer number (21786678).

Almost surely, 2^72622255 is an apocalyptic number.

72622255 is a deficient number, since it is larger than the sum of its proper divisors (14524457).

72622255 is a wasteful number, since it uses less digits than its factorization.

72622255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14524456.

The product of its digits is 16800, while the sum is 31.

The square root of 72622255 is about 8521.8692198367. The cubic root of 72622255 is about 417.2117938739.

It can be divided in two parts, 7 and 2622255, that added together give a palindrome (2622262).

The spelling of 72622255 in words is "seventy-two million, six hundred twenty-two thousand, two hundred fifty-five".