82540511 has 4 divisors (see below), whose sum is σ = 83271072. Its totient is φ = 81809952.

The previous prime is 82540499. The next prime is 82540519. The reversal of 82540511 is 11504528.

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 82540511 - 2¹⁸ = 82278367 is a prime.

It is a super-2 number, since 2×82540511² = 13625871912282242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82540519) 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, 365111 + ... + 365336.

It is an arithmetic number, because the mean of its divisors is an integer number (20817768).

Almost surely, 2^82540511 is an apocalyptic number.

82540511 is a deficient number, since it is larger than the sum of its proper divisors (730561).

82540511 is a wasteful number, since it uses less digits than its factorization.

82540511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 730560.

The product of its (nonzero) digits is 1600, while the sum is 26.

The square root of 82540511 is about 9085.1808457510. The cubic root of 82540511 is about 435.4006279642.

The spelling of 82540511 in words is "eighty-two million, five hundred forty thousand, five hundred eleven".