83525573 has 4 divisors (see below), whose sum is σ = 88438860. Its totient is φ = 78612288.

The previous prime is 83525557. The next prime is 83525579. The reversal of 83525573 is 37552538.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 37552538 = 2 ⋅18776269.

It can be written as a sum of positive squares in 2 ways, for example, as 63473089 + 20052484 = 7967^2 + 4478^2 .

It is a cyclic number.

It is not a de Polignac number, because 83525573 - 2⁴ = 83525557 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 (83525579) 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, 2456618 + ... + 2456651.

It is an arithmetic number, because the mean of its divisors is an integer number (22109715).

Almost surely, 2^83525573 is an apocalyptic number.

It is an amenable number.

83525573 is a deficient number, since it is larger than the sum of its proper divisors (4913287).

83525573 is a wasteful number, since it uses less digits than its factorization.

83525573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4913286.

The product of its digits is 126000, while the sum is 38.

The square root of 83525573 is about 9139.2326264299. The cubic root of 83525573 is about 437.1258480604.

The spelling of 83525573 in words is "eighty-three million, five hundred twenty-five thousand, five hundred seventy-three".