71998255 has 32 divisors (see below), whose sum is σ = 102187008. Its totient is φ = 47673600.

The previous prime is 71998253. The next prime is 71998259. The reversal of 71998255 is 55289917.

It is not a de Polignac number, because 71998255 - 2¹ = 71998253 is a prime.

Its product of digits (226800) is a multiple of the sum of its prime divisors (567).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71998253) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 187794 + ... + 188176.

It is an arithmetic number, because the mean of its divisors is an integer number (3193344).

Almost surely, 2^71998255 is an apocalyptic number.

71998255 is a deficient number, since it is larger than the sum of its proper divisors (30188753).

71998255 is a wasteful number, since it uses less digits than its factorization.

71998255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 567.

The product of its digits is 226800, while the sum is 46.

The square root of 71998255 is about 8485.1785485044. The cubic root of 71998255 is about 416.0134037071.

The spelling of 71998255 in words is "seventy-one million, nine hundred ninety-eight thousand, two hundred fifty-five".