82551131 has 8 divisors (see below), whose sum is σ = 89552064. Its totient is φ = 75643200.

The previous prime is 82551121. The next prime is 82551151. The reversal of 82551131 is 13115528.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 82551131 - 2²⁶ = 15442267 is a prime.

It is a super-2 number, since 2×82551131² = 13629378458758322, which contains 22 as substring.

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 82551131.

It is not an unprimeable number, because it can be changed into a prime (82551121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21395 + ... + 24956.

It is an arithmetic number, because the mean of its divisors is an integer number (11194008).

Almost surely, 2^82551131 is an apocalyptic number.

82551131 is a deficient number, since it is larger than the sum of its proper divisors (7000933).

82551131 is a wasteful number, since it uses less digits than its factorization.

82551131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46501.

The product of its digits is 1200, while the sum is 26.

The square root of 82551131 is about 9085.7652952297. The cubic root of 82551131 is about 435.4193006391.

Adding to 82551131 its reverse (13115528), we get a palindrome (95666659).

The spelling of 82551131 in words is "eighty-two million, five hundred fifty-one thousand, one hundred thirty-one".