83250521 has 2 divisors, whose sum is σ = 83250522. Its totient is φ = 83250520.

The previous prime is 83250509. The next prime is 83250527. The reversal of 83250521 is 12505238.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78074896 + 5175625 = 8836^2 + 2275^2 .

It is a cyclic number.

It is not a de Polignac number, because 83250521 - 2¹⁸ = 82988377 is a prime.

It is a Chen prime.

It is an alternating number because its digits alternate between even and odd.

It is not a weakly prime, because it can be changed into another prime (83250527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41625260 + 41625261.

It is an arithmetic number, because the mean of its divisors is an integer number (41625261).

Almost surely, 2^83250521 is an apocalyptic number.

It is an amenable number.

83250521 is a deficient number, since it is larger than the sum of its proper divisors (1).

83250521 is an equidigital number, since it uses as much as digits as its factorization.

83250521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 83250521 is about 9124.1723460268. The cubic root of 83250521 is about 436.6454979411.

Adding to 83250521 its reverse (12505238), we get a palindrome (95755759).

The spelling of 83250521 in words is "eighty-three million, two hundred fifty thousand, five hundred twenty-one".