82505099 has 4 divisors (see below), whose sum is σ = 83107464. Its totient is φ = 81902736.

The previous prime is 82505081. The next prime is 82505107. The reversal of 82505099 is 99050528.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 82505099 - 2⁸ = 82504843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82505299) 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, 300977 + ... + 301250.

It is an arithmetic number, because the mean of its divisors is an integer number (20776866).

Almost surely, 2^82505099 is an apocalyptic number.

82505099 is a deficient number, since it is larger than the sum of its proper divisors (602365).

82505099 is a wasteful number, since it uses less digits than its factorization.

82505099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 602364.

The product of its (nonzero) digits is 32400, while the sum is 38.

The square root of 82505099 is about 9083.2317486674. The cubic root of 82505099 is about 435.3383530387.

The spelling of 82505099 in words is "eighty-two million, five hundred five thousand, ninety-nine".