83455817 has 2 divisors, whose sum is σ = 83455818. Its totient is φ = 83455816.

The previous prime is 83455807. The next prime is 83455829. The reversal of 83455817 is 71855438.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83375161 + 80656 = 9131^2 + 284^2 .

It is a cyclic number.

It is not a de Polignac number, because 83455817 - 2¹⁰ = 83454793 is a prime.

It is a super-2 number, since 2×83455817² = 13929746782274978, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (83455807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41727908 + 41727909.

It is an arithmetic number, because the mean of its divisors is an integer number (41727909).

Almost surely, 2^83455817 is an apocalyptic number.

It is an amenable number.

83455817 is a deficient number, since it is larger than the sum of its proper divisors (1).

83455817 is an equidigital number, since it uses as much as digits as its factorization.

83455817 is an evil number, because the sum of its binary digits is even.

The product of its digits is 134400, while the sum is 41.

The square root of 83455817 is about 9135.4155351577. The cubic root of 83455817 is about 437.0041262852.

The spelling of 83455817 in words is "eighty-three million, four hundred fifty-five thousand, eight hundred seventeen".