921255059 has 2 divisors, whose sum is σ = 921255060. Its totient is φ = 921255058.

The previous prime is 921255017. The next prime is 921255061. The reversal of 921255059 is 950552129.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-921255059 is a prime.

Together with 921255061, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (921255259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 460627529 + 460627530.

It is an arithmetic number, because the mean of its divisors is an integer number (460627530).

Almost surely, 2^921255059 is an apocalyptic number.

921255059 is a deficient number, since it is larger than the sum of its proper divisors (1).

921255059 is an equidigital number, since it uses as much as digits as its factorization.

921255059 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40500, while the sum is 38.

The square root of 921255059 is about 30352.1837599867. The cubic root of 921255059 is about 973.0308920555.

The spelling of 921255059 in words is "nine hundred twenty-one million, two hundred fifty-five thousand, fifty-nine".