82665251 has 8 divisors (see below), whose sum is σ = 85521408. Its totient is φ = 79821000.

The previous prime is 82665241. The next prime is 82665259. The reversal of 82665251 is 15256628.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 82665251 - 2²² = 78470947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82665259) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12506 + ... + 17936.

It is an arithmetic number, because the mean of its divisors is an integer number (10690176).

Almost surely, 2^82665251 is an apocalyptic number.

82665251 is a deficient number, since it is larger than the sum of its proper divisors (2856157).

82665251 is a wasteful number, since it uses less digits than its factorization.

82665251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5953.

The product of its digits is 28800, while the sum is 35.

The square root of 82665251 is about 9092.0432797034. The cubic root of 82665251 is about 435.6198517808.

The spelling of 82665251 in words is "eighty-two million, six hundred sixty-five thousand, two hundred fifty-one".