82541549 has 4 divisors (see below), whose sum is σ = 86130336. Its totient is φ = 78952764.

The previous prime is 82541507. The next prime is 82541551. The reversal of 82541549 is 94514528.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 82541549 - 2⁸ = 82541293 is a prime.

It is a super-2 number, since 2×82541549² = 13626214622638802, 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 (82441549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1794359 + ... + 1794404.

It is an arithmetic number, because the mean of its divisors is an integer number (21532584).

Almost surely, 2^82541549 is an apocalyptic number.

It is an amenable number.

82541549 is a deficient number, since it is larger than the sum of its proper divisors (3588787).

82541549 is a wasteful number, since it uses less digits than its factorization.

82541549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3588786.

The product of its digits is 57600, while the sum is 38.

The square root of 82541549 is about 9085.2379715668. The cubic root of 82541549 is about 435.4024531042.

The spelling of 82541549 in words is "eighty-two million, five hundred forty-one thousand, five hundred forty-nine".