82864551 has 24 divisors (see below), whose sum is σ = 138796672. Its totient is φ = 43045200.

The previous prime is 82864543. The next prime is 82864577. The reversal of 82864551 is 15546828.

It is not a de Polignac number, because 82864551 - 2³ = 82864543 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82864531) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13765 + ... + 18846.

Almost surely, 2^82864551 is an apocalyptic number.

82864551 is a deficient number, since it is larger than the sum of its proper divisors (55932121).

82864551 is a wasteful number, since it uses less digits than its factorization.

82864551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32643 (or 32632 counting only the distinct ones).

The product of its digits is 76800, while the sum is 39.

The square root of 82864551 is about 9102.9968142365. The cubic root of 82864551 is about 435.9696535706.

The spelling of 82864551 in words is "eighty-two million, eight hundred sixty-four thousand, five hundred fifty-one".