82557887 has 8 divisors (see below), whose sum is σ = 84734160. Its totient is φ = 80389440.

The previous prime is 82557829. The next prime is 82557919. The reversal of 82557887 is 78875528.

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 82557887 - 2⁶ = 82557823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82557187) 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, 23753 + ... + 27005.

It is an arithmetic number, because the mean of its divisors is an integer number (10591770).

Almost surely, 2^82557887 is an apocalyptic number.

82557887 is a deficient number, since it is larger than the sum of its proper divisors (2176273).

82557887 is a wasteful number, since it uses less digits than its factorization.

82557887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3913.

The product of its digits is 1254400, while the sum is 50.

The square root of 82557887 is about 9086.1370779886. The cubic root of 82557887 is about 435.4311785807.

The spelling of 82557887 in words is "eighty-two million, five hundred fifty-seven thousand, eight hundred eighty-seven".