83435257 has 4 divisors (see below), whose sum is σ = 83457396. Its totient is φ = 83413120.

The previous prime is 83435243. The next prime is 83435267. The reversal of 83435257 is 75253438.

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 14561856 + 68873401 = 3816^2 + 8299^2 .

It is a cyclic number.

It is not a de Polignac number, because 83435257 - 2¹⁵ = 83402489 is a prime.

It is a super-2 number, since 2×83435257² = 13922884221312098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83435267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3844 + ... + 13477.

It is an arithmetic number, because the mean of its divisors is an integer number (20864349).

Almost surely, 2^83435257 is an apocalyptic number.

It is an amenable number.

83435257 is a deficient number, since it is larger than the sum of its proper divisors (22139).

83435257 is a wasteful number, since it uses less digits than its factorization.

83435257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22138.

The product of its digits is 100800, while the sum is 37.

The square root of 83435257 is about 9134.2901749397. The cubic root of 83435257 is about 436.9682368646.

The spelling of 83435257 in words is "eighty-three million, four hundred thirty-five thousand, two hundred fifty-seven".