82101549 has 4 divisors (see below), whose sum is σ = 109468736. Its totient is φ = 54734364.

The previous prime is 82101529. The next prime is 82101659. The reversal of 82101549 is 94510128.

It is a happy number.

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 not a de Polignac number, because 82101549 - 2¹² = 82097453 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 (82101529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13683589 + ... + 13683594.

It is an arithmetic number, because the mean of its divisors is an integer number (27367184).

Almost surely, 2^82101549 is an apocalyptic number.

It is an amenable number.

82101549 is a deficient number, since it is larger than the sum of its proper divisors (27367187).

82101549 is a wasteful number, since it uses less digits than its factorization.

82101549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27367186.

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 82101549 is about 9060.9905087689. The cubic root of 82101549 is about 434.6274151448.

The spelling of 82101549 in words is "eighty-two million, one hundred one thousand, five hundred forty-nine".