82977511 has 4 divisors (see below), whose sum is σ = 83180800. Its totient is φ = 82774224.

The previous prime is 82977469. The next prime is 82977533. The reversal of 82977511 is 11577928.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 82977511 - 2²⁵ = 49423079 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 (82977551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101031 + ... + 101848.

It is an arithmetic number, because the mean of its divisors is an integer number (20795200).

Almost surely, 2^82977511 is an apocalyptic number.

82977511 is a deficient number, since it is larger than the sum of its proper divisors (203289).

82977511 is a wasteful number, since it uses less digits than its factorization.

82977511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203288.

The product of its digits is 35280, while the sum is 40.

The square root of 82977511 is about 9109.1992513063. The cubic root of 82977511 is about 436.1676665557.

The spelling of 82977511 in words is "eighty-two million, nine hundred seventy-seven thousand, five hundred eleven".