525854993 has 2 divisors, whose sum is σ = 525854994. Its totient is φ = 525854992.

The previous prime is 525854969. The next prime is 525855007. The reversal of 525854993 is 399458525.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 520204864 + 5650129 = 22808^2 + 2377^2 .

It is a cyclic number.

It is not a de Polignac number, because 525854993 - 2⁶ = 525854929 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (525854093) 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, 262927496 + 262927497.

It is an arithmetic number, because the mean of its divisors is an integer number (262927497).

Almost surely, 2^525854993 is an apocalyptic number.

It is an amenable number.

525854993 is a deficient number, since it is larger than the sum of its proper divisors (1).

525854993 is an equidigital number, since it uses as much as digits as its factorization.

525854993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1944000, while the sum is 50.

The square root of 525854993 is about 22931.5283616247. The cubic root of 525854993 is about 807.1520125443.

The spelling of 525854993 in words is "five hundred twenty-five million, eight hundred fifty-four thousand, nine hundred ninety-three".