82136157 has 4 divisors (see below), whose sum is σ = 109514880. Its totient is φ = 54757436.

The previous prime is 82136147. The next prime is 82136179. The reversal of 82136157 is 75163128.

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 82136157 - 2⁴ = 82136141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82136147) 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, 13689357 + ... + 13689362.

It is an arithmetic number, because the mean of its divisors is an integer number (27378720).

Almost surely, 2^82136157 is an apocalyptic number.

It is an amenable number.

82136157 is a deficient number, since it is larger than the sum of its proper divisors (27378723).

82136157 is a wasteful number, since it uses less digits than its factorization.

82136157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27378722.

The product of its digits is 10080, while the sum is 33.

The square root of 82136157 is about 9062.9000325503. The cubic root of 82136157 is about 434.6884755948.

The spelling of 82136157 in words is "eighty-two million, one hundred thirty-six thousand, one hundred fifty-seven".