82977543 has 12 divisors (see below), whose sum is σ = 130752648. Its totient is φ = 50289360.

The previous prime is 82977539. The next prime is 82977551. The reversal of 82977543 is 34577928.

It is not a de Polignac number, because 82977543 - 2² = 82977539 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82977533) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 418980 + ... + 419177.

It is an arithmetic number, because the mean of its divisors is an integer number (10896054).

Almost surely, 2^82977543 is an apocalyptic number.

82977543 is a deficient number, since it is larger than the sum of its proper divisors (47775105).

82977543 is a wasteful number, since it uses less digits than its factorization.

82977543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 838174 (or 838171 counting only the distinct ones).

The product of its digits is 423360, while the sum is 45.

The square root of 82977543 is about 9109.2010077723. The cubic root of 82977543 is about 436.1677226245.

The spelling of 82977543 in words is "eighty-two million, nine hundred seventy-seven thousand, five hundred forty-three".