83415533 has 2 divisors, whose sum is σ = 83415534. Its totient is φ = 83415532.

The previous prime is 83415523. The next prime is 83415539. The reversal of 83415533 is 33551438.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83411689 + 3844 = 9133^2 + 62^2 .

It is a cyclic number.

It is not a de Polignac number, because 83415533 - 2¹⁰ = 83414509 is a prime.

It is a super-2 number, since 2×83415533² = 13916302291348178, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 83415533.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83415539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41707766 + 41707767.

It is an arithmetic number, because the mean of its divisors is an integer number (41707767).

Almost surely, 2^83415533 is an apocalyptic number.

It is an amenable number.

83415533 is a deficient number, since it is larger than the sum of its proper divisors (1).

83415533 is an equidigital number, since it uses as much as digits as its factorization.

83415533 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21600, while the sum is 32.

The square root of 83415533 is about 9133.2104432122. The cubic root of 83415533 is about 436.9338012193.

The spelling of 83415533 in words is "eighty-three million, four hundred fifteen thousand, five hundred thirty-three".