71156253 has 16 divisors (see below), whose sum is σ = 111927296. Its totient is φ = 39348720.

The previous prime is 71156249. The next prime is 71156257. The reversal of 71156253 is 35265117.

It is an interprime number because it is at equal distance from previous prime (71156249) and next prime (71156257).

It is not a de Polignac number, because 71156253 - 2² = 71156249 is a prime.

It is a Smith number, since the sum of its digits (30) 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 self number, because there is not a number n which added to its sum of digits gives 71156253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71156257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54001 + ... + 55302.

It is an arithmetic number, because the mean of its divisors is an integer number (6995456).

Almost surely, 2^71156253 is an apocalyptic number.

It is an amenable number.

71156253 is a deficient number, since it is larger than the sum of its proper divisors (40771043).

71156253 is a wasteful number, since it uses less digits than its factorization.

71156253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109344.

The product of its digits is 6300, while the sum is 30.

The square root of 71156253 is about 8435.4165872232. The cubic root of 71156253 is about 414.3853153819.

The spelling of 71156253 in words is "seventy-one million, one hundred fifty-six thousand, two hundred fifty-three".