82151199 has 32 divisors (see below), whose sum is σ = 134140160. Its totient is φ = 49369824.

The previous prime is 82151197. The next prime is 82151203. The reversal of 82151199 is 99115128.

It is not a de Polignac number, because 82151199 - 2¹ = 82151197 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82151197) 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, 12372 + ... + 17814.

It is an arithmetic number, because the mean of its divisors is an integer number (4191880).

Almost surely, 2^82151199 is an apocalyptic number.

82151199 is a deficient number, since it is larger than the sum of its proper divisors (51988961).

82151199 is a wasteful number, since it uses less digits than its factorization.

82151199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5508 (or 5502 counting only the distinct ones).

The product of its digits is 6480, while the sum is 36.

The square root of 82151199 is about 9063.7298613761. The cubic root of 82151199 is about 434.7150095241.

It can be divided in two parts, 8215119 and 9, that added together give a palindrome (8215128).

The spelling of 82151199 in words is "eighty-two million, one hundred fifty-one thousand, one hundred ninety-nine".