82751285 has 8 divisors (see below), whose sum is σ = 101175480. Its totient is φ = 64951744.

The previous prime is 82751269. The next prime is 82751293. The reversal of 82751285 is 58215728.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2630884 + 80120401 = 1622^2 + 8951^2 .

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 82751285 - 2⁴ = 82751269 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 155870 + ... + 156399.

It is an arithmetic number, because the mean of its divisors is an integer number (12646935).

Almost surely, 2^82751285 is an apocalyptic number.

It is an amenable number.

82751285 is a deficient number, since it is larger than the sum of its proper divisors (18424195).

82751285 is a wasteful number, since it uses less digits than its factorization.

82751285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312327.

The product of its digits is 44800, while the sum is 38.

The square root of 82751285 is about 9096.7733290437. The cubic root of 82751285 is about 435.7709234164.

The spelling of 82751285 in words is "eighty-two million, seven hundred fifty-one thousand, two hundred eighty-five".