82515850 has 12 divisors (see below), whose sum is σ = 153479574. Its totient is φ = 33006320.

The previous prime is 82515833. The next prime is 82515887. The reversal of 82515850 is 5851528.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 67716441 + 14799409 = 8229^2 + 3847^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 825109 + ... + 825208.

Almost surely, 2^82515850 is an apocalyptic number.

82515850 is a deficient number, since it is larger than the sum of its proper divisors (70963724).

82515850 is a wasteful number, since it uses less digits than its factorization.

82515850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1650329 (or 1650324 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 34.

The square root of 82515850 is about 9083.8235341733. The cubic root of 82515850 is about 435.3572614432.

The spelling of 82515850 in words is "eighty-two million, five hundred fifteen thousand, eight hundred fifty".