82111253 has 4 divisors (see below), whose sum is σ = 93841440. Its totient is φ = 70381068.

The previous prime is 82111231. The next prime is 82111259. The reversal of 82111253 is 35211128.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 82111253 - 2²⁴ = 65334037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82111259) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5865083 + ... + 5865096.

It is an arithmetic number, because the mean of its divisors is an integer number (23460360).

Almost surely, 2^82111253 is an apocalyptic number.

It is an amenable number.

82111253 is a deficient number, since it is larger than the sum of its proper divisors (11730187).

82111253 is a wasteful number, since it uses less digits than its factorization.

82111253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11730186.

The product of its digits is 480, while the sum is 23.

The square root of 82111253 is about 9061.5259752428. The cubic root of 82111253 is about 434.6445380790.

It can be divided in two parts, 8211125 and 3, that added together give a palindrome (8211128).

The spelling of 82111253 in words is "eighty-two million, one hundred eleven thousand, two hundred fifty-three".