82559801 has 4 divisors (see below), whose sum is σ = 82582500. Its totient is φ = 82537104.

The previous prime is 82559791. The next prime is 82559831. The reversal of 82559801 is 10895528.

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

It can be written as a sum of positive squares in 2 ways, for example, as 42250000 + 40309801 = 6500^2 + 6349^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82559801 is a prime.

It is a super-2 number, since 2×82559801² = 13632241482319202, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82559831) 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, 4526 + ... + 13623.

It is an arithmetic number, because the mean of its divisors is an integer number (20645625).

Almost surely, 2^82559801 is an apocalyptic number.

It is an amenable number.

82559801 is a deficient number, since it is larger than the sum of its proper divisors (22699).

82559801 is a wasteful number, since it uses less digits than its factorization.

82559801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22698.

The product of its (nonzero) digits is 28800, while the sum is 38.

The square root of 82559801 is about 9086.2424026657. The cubic root of 82559801 is about 435.4345435281.

The spelling of 82559801 in words is "eighty-two million, five hundred fifty-nine thousand, eight hundred one".