83553213 has 4 divisors (see below), whose sum is σ = 111404288. Its totient is φ = 55702140.

The previous prime is 83553199. The next prime is 83553251. The reversal of 83553213 is 31235538.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 83553213 - 2⁹ = 83552701 is a prime.

It is a super-2 number, since 2×83553213² = 13962278805246738, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83553313) 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 3 ways as a sum of consecutive naturals, for example, 13925533 + ... + 13925538.

It is an arithmetic number, because the mean of its divisors is an integer number (27851072).

Almost surely, 2^83553213 is an apocalyptic number.

It is an amenable number.

83553213 is a deficient number, since it is larger than the sum of its proper divisors (27851075).

83553213 is a wasteful number, since it uses less digits than its factorization.

83553213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27851074.

The product of its digits is 10800, while the sum is 30.

The square root of 83553213 is about 9140.7446633193. The cubic root of 83553213 is about 437.1740601449.

The spelling of 83553213 in words is "eighty-three million, five hundred fifty-three thousand, two hundred thirteen".