82151285 has 32 divisors (see below), whose sum is σ = 108345600. Its totient is φ = 59609088.

The previous prime is 82151273. The next prime is 82151297. The reversal of 82151285 is 58215128.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (82151273) and next prime (82151297).

It is a cyclic number.

It is not a de Polignac number, because 82151285 - 2¹² = 82147189 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 182741 + ... + 183189.

It is an arithmetic number, because the mean of its divisors is an integer number (3385800).

Almost surely, 2^82151285 is an apocalyptic number.

It is an amenable number.

82151285 is a deficient number, since it is larger than the sum of its proper divisors (26194315).

82151285 is a wasteful number, since it uses less digits than its factorization.

82151285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 557.

The product of its digits is 6400, while the sum is 32.

The square root of 82151285 is about 9063.7346055586. The cubic root of 82151285 is about 434.7151612179.

The spelling of 82151285 in words is "eighty-two million, one hundred fifty-one thousand, two hundred eighty-five".