83087549 has 6 divisors (see below), whose sum is σ = 84002814. Its totient is φ = 82174200.

The previous prime is 83087531. The next prime is 83087561. The reversal of 83087549 is 94578038.

It can be written as a sum of positive squares in only one way, i.e., 82264900 + 822649 = 9070^2 + 907^2 .

It is not a de Polignac number, because 83087549 - 2¹² = 83083453 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 (83087509) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 91154 + ... + 92060.

It is an arithmetic number, because the mean of its divisors is an integer number (14000469).

Almost surely, 2^83087549 is an apocalyptic number.

It is an amenable number.

83087549 is a deficient number, since it is larger than the sum of its proper divisors (915265).

83087549 is an frugal number, since it uses more digits than its factorization.

83087549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1915 (or 1008 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 44.

The square root of 83087549 is about 9115.2371883566. The cubic root of 83087549 is about 436.3603847072.

The spelling of 83087549 in words is "eighty-three million, eighty-seven thousand, five hundred forty-nine".