83475221 has 8 divisors (see below), whose sum is σ = 85783488. Its totient is φ = 81180000.

The previous prime is 83475179. The next prime is 83475229. The reversal of 83475221 is 12257438.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-83475221 is a prime.

It is a super-2 number, since 2×83475221² = 13936225041997682, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83475229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10496 + ... + 16646.

It is an arithmetic number, because the mean of its divisors is an integer number (10722936).

Almost surely, 2^83475221 is an apocalyptic number.

It is an amenable number.

83475221 is a deficient number, since it is larger than the sum of its proper divisors (2308267).

83475221 is a wasteful number, since it uses less digits than its factorization.

83475221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6523.

The product of its digits is 13440, while the sum is 32.

The square root of 83475221 is about 9136.4774940893. The cubic root of 83475221 is about 437.0379923925.

The spelling of 83475221 in words is "eighty-three million, four hundred seventy-five thousand, two hundred twenty-one".