83917261 has 4 divisors (see below), whose sum is σ = 83995132. Its totient is φ = 83839392.

The previous prime is 83917199. The next prime is 83917291. The reversal of 83917261 is 16271938.

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

It can be written as a sum of positive squares in 2 ways, for example, as 52490025 + 31427236 = 7245^2 + 5606^2 .

It is a cyclic number.

It is not a de Polignac number, because 83917261 - 2¹⁷ = 83786189 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 83917261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83917291) 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, 37296 + ... + 39481.

It is an arithmetic number, because the mean of its divisors is an integer number (20998783).

Almost surely, 2^83917261 is an apocalyptic number.

It is an amenable number.

83917261 is a deficient number, since it is larger than the sum of its proper divisors (77871).

83917261 is a wasteful number, since it uses less digits than its factorization.

83917261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77870.

The product of its digits is 18144, while the sum is 37.

The square root of 83917261 is about 9160.6364953534. The cubic root of 83917261 is about 437.8080742778.

The spelling of 83917261 in words is "eighty-three million, nine hundred seventeen thousand, two hundred sixty-one".