85063921 has 2 divisors, whose sum is σ = 85063922. Its totient is φ = 85063920.

The previous prime is 85063883. The next prime is 85063949. The reversal of 85063921 is 12936058.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50253921 + 34810000 = 7089^2 + 5900^2 .

It is a cyclic number.

It is not a de Polignac number, because 85063921 - 2¹⁵ = 85031153 is a prime.

It is not a weakly prime, because it can be changed into another prime (85063991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42531960 + 42531961.

It is an arithmetic number, because the mean of its divisors is an integer number (42531961).

Almost surely, 2^85063921 is an apocalyptic number.

It is an amenable number.

85063921 is a deficient number, since it is larger than the sum of its proper divisors (1).

85063921 is an equidigital number, since it uses as much as digits as its factorization.

85063921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 85063921 is about 9223.0104087548. The cubic root of 85063921 is about 439.7931551876.

Adding to 85063921 its reverse (12936058), we get a palindrome (97999979).

The spelling of 85063921 in words is "eighty-five million, sixty-three thousand, nine hundred twenty-one".