71712255 has 16 divisors (see below), whose sum is σ = 114964704. Its totient is φ = 38171520.

The previous prime is 71712241. The next prime is 71712257. The reversal of 71712255 is 55221717.

It is not a de Polignac number, because 71712255 - 2¹⁸ = 71450111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71712257) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 3697 + ... + 12533.

It is an arithmetic number, because the mean of its divisors is an integer number (7185294).

Almost surely, 2^71712255 is an apocalyptic number.

71712255 is a deficient number, since it is larger than the sum of its proper divisors (43252449).

71712255 is a wasteful number, since it uses less digits than its factorization.

71712255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9386.

The product of its digits is 4900, while the sum is 30.

The square root of 71712255 is about 8468.3088630493. The cubic root of 71712255 is about 415.4618268020.

The spelling of 71712255 in words is "seventy-one million, seven hundred twelve thousand, two hundred fifty-five".