83521322 has 16 divisors (see below), whose sum is σ = 129748392. Its totient is φ = 40297920.

The previous prime is 83521307. The next prime is 83521337. The reversal of 83521322 is 22312538.

It is a Cunningham number, because it is equal to 9139²+1.

It is an interprime number because it is at equal distance from previous prime (83521307) and next prime (83521337).

It can be written as a sum of positive squares in 4 ways, for example, as 60202081 + 23319241 = 7759^2 + 4829^2 .

It is a super-2 number, since 2×83521322² = 13951622457255368, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 83521291 and 83521300.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8 + ... + 12924.

Almost surely, 2^83521322 is an apocalyptic number.

83521322 is a deficient number, since it is larger than the sum of its proper divisors (46227070).

83521322 is a wasteful number, since it uses less digits than its factorization.

83521322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13033.

The product of its digits is 2880, while the sum is 26.

The square root of 83521322 is about 9139.0000547106. Note that the first 4 decimals coincide. The cubic root of 83521322 is about 437.1184321540.

The spelling of 83521322 in words is "eighty-three million, five hundred twenty-one thousand, three hundred twenty-two".