82542631 has 4 divisors (see below), whose sum is σ = 86887000. Its totient is φ = 78198264.

The previous prime is 82542611. The next prime is 82542641. The reversal of 82542631 is 13624528.

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

It is a cyclic number.

It is not a de Polignac number, because 82542631 - 2⁷ = 82542503 is a prime.

It is a super-2 number, since 2×82542631² = 13626571864804322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 82542593 and 82542602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82542601) 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, 2172156 + ... + 2172193.

It is an arithmetic number, because the mean of its divisors is an integer number (21721750).

Almost surely, 2^82542631 is an apocalyptic number.

82542631 is a deficient number, since it is larger than the sum of its proper divisors (4344369).

82542631 is a wasteful number, since it uses less digits than its factorization.

82542631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4344368.

The product of its digits is 11520, while the sum is 31.

The square root of 82542631 is about 9085.2975185186. The cubic root of 82542631 is about 435.4043555941.

The spelling of 82542631 in words is "eighty-two million, five hundred forty-two thousand, six hundred thirty-one".