83254021 has 2 divisors, whose sum is σ = 83254022. Its totient is φ = 83254020.

The previous prime is 83254007. The next prime is 83254051. The reversal of 83254021 is 12045238.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59136100 + 24117921 = 7690^2 + 4911^2 .

It is a cyclic number.

It is not a de Polignac number, because 83254021 - 2¹³ = 83245829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83254051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41627010 + 41627011.

It is an arithmetic number, because the mean of its divisors is an integer number (41627011).

Almost surely, 2^83254021 is an apocalyptic number.

It is an amenable number.

83254021 is a deficient number, since it is larger than the sum of its proper divisors (1).

83254021 is an equidigital number, since it uses as much as digits as its factorization.

83254021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 83254021 is about 9124.3641422293. The cubic root of 83254021 is about 436.6516169732.

Adding to 83254021 its reverse (12045238), we get a palindrome (95299259).

The spelling of 83254021 in words is "eighty-three million, two hundred fifty-four thousand, twenty-one".