82217050 has 12 divisors (see below), whose sum is σ = 152923806. Its totient is φ = 32886800.

The previous prime is 82217029. The next prime is 82217063. The reversal of 82217050 is 5071228.

It can be written as a sum of positive squares in 3 ways, for example, as 76160529 + 6056521 = 8727^2 + 2461^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

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, 822121 + ... + 822220.

Almost surely, 2^82217050 is an apocalyptic number.

82217050 is a deficient number, since it is larger than the sum of its proper divisors (70706756).

82217050 is a wasteful number, since it uses less digits than its factorization.

82217050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1644353 (or 1644348 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 82217050 is about 9067.3617993328. The cubic root of 82217050 is about 434.8311318816.

Adding to 82217050 its reverse (5071228), we get a palindrome (87288278).

The spelling of 82217050 in words is "eighty-two million, two hundred seventeen thousand, fifty".