82509903 has 24 divisors (see below), whose sum is σ = 136465056. Its totient is φ = 47059200.

The previous prime is 82509893. The next prime is 82509943. The reversal of 82509903 is 30990528.

It is not a de Polignac number, because 82509903 - 2⁴ = 82509887 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82509943) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47083 + ... + 48803.

It is an arithmetic number, because the mean of its divisors is an integer number (5686044).

Almost surely, 2^82509903 is an apocalyptic number.

82509903 is a deficient number, since it is larger than the sum of its proper divisors (53955153).

82509903 is a wasteful number, since it uses less digits than its factorization.

82509903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2495 (or 2492 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 82509903 is about 9083.4961881425. The cubic root of 82509903 is about 435.3468023139.

The spelling of 82509903 in words is "eighty-two million, five hundred nine thousand, nine hundred three".