82997158 has 4 divisors (see below), whose sum is σ = 124495740. Its totient is φ = 41498578.

The previous prime is 82997147. The next prime is 82997171. The reversal of 82997158 is 85179928.

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

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20749288 + ... + 20749291.

It is an arithmetic number, because the mean of its divisors is an integer number (31123935).

Almost surely, 2^82997158 is an apocalyptic number.

82997158 is a deficient number, since it is larger than the sum of its proper divisors (41498582).

82997158 is a wasteful number, since it uses less digits than its factorization.

82997158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41498581.

The product of its digits is 362880, while the sum is 49.

The square root of 82997158 is about 9110.2776027956. The cubic root of 82997158 is about 436.2020883719.

The spelling of 82997158 in words is "eighty-two million, nine hundred ninety-seven thousand, one hundred fifty-eight".