72214255 has 4 divisors (see below), whose sum is σ = 86657112. Its totient is φ = 57771400.

The previous prime is 72214237. The next prime is 72214291. The reversal of 72214255 is 55241227.

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

It is not a de Polignac number, because 72214255 - 2¹¹ = 72212207 is a prime.

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 (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7221421 + ... + 7221430.

It is an arithmetic number, because the mean of its divisors is an integer number (21664278).

Almost surely, 2^72214255 is an apocalyptic number.

72214255 is a deficient number, since it is larger than the sum of its proper divisors (14442857).

72214255 is a wasteful number, since it uses less digits than its factorization.

72214255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14442856.

The product of its digits is 5600, while the sum is 28.

The square root of 72214255 is about 8497.8970928107. The cubic root of 72214255 is about 416.4290118520.

It can be divided in two parts, 7221 and 4255, that added together give a triangular number (11476 = T₁₅₁).

The spelling of 72214255 in words is "seventy-two million, two hundred fourteen thousand, two hundred fifty-five".