83750261 has 6 divisors (see below), whose sum is σ = 97423830. Its totient is φ = 71785896.

The previous prime is 83750257. The next prime is 83750263. The reversal of 83750261 is 16205738.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 76562500 + 7187761 = 8750^2 + 2681^2 .

It is not a de Polignac number, because 83750261 - 2² = 83750257 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83750263) 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 5 ways as a sum of consecutive naturals, for example, 854546 + ... + 854643.

It is an arithmetic number, because the mean of its divisors is an integer number (16237305).

Almost surely, 2^83750261 is an apocalyptic number.

It is an amenable number.

83750261 is a deficient number, since it is larger than the sum of its proper divisors (13673569).

83750261 is a wasteful number, since it uses less digits than its factorization.

83750261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1709203 (or 1709196 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 83750261 is about 9151.5168688038. The cubic root of 83750261 is about 437.5174606365.

Adding to 83750261 its reverse (16205738), we get a palindrome (99955999).

The spelling of 83750261 in words is "eighty-three million, seven hundred fifty thousand, two hundred sixty-one".