201428593 has 2 divisors, whose sum is σ = 201428594. Its totient is φ = 201428592.

The previous prime is 201428587. The next prime is 201428603. The reversal of 201428593 is 395824102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 124813584 + 76615009 = 11172^2 + 8753^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201428593 is a prime.

It is not a weakly prime, because it can be changed into another prime (201428543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100714296 + 100714297.

It is an arithmetic number, because the mean of its divisors is an integer number (100714297).

Almost surely, 2^201428593 is an apocalyptic number.

It is an amenable number.

201428593 is a deficient number, since it is larger than the sum of its proper divisors (1).

201428593 is an equidigital number, since it uses as much as digits as its factorization.

201428593 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 201428593 is about 14192.5541394070. The cubic root of 201428593 is about 586.1926558477.

The spelling of 201428593 in words is "two hundred one million, four hundred twenty-eight thousand, five hundred ninety-three".