53250581 has 2 divisors, whose sum is σ = 53250582. Its totient is φ = 53250580.

The previous prime is 53250557. The next prime is 53250601. The reversal of 53250581 is 18505235.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37576900 + 15673681 = 6130^2 + 3959^2 .

It is a cyclic number.

It is not a de Polignac number, because 53250581 - 2⁶ = 53250517 is a prime.

It is a super-2 number, since 2×53250581² = 5671248753675122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53250541) 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, 26625290 + 26625291.

It is an arithmetic number, because the mean of its divisors is an integer number (26625291).

Almost surely, 2^53250581 is an apocalyptic number.

It is an amenable number.

53250581 is a deficient number, since it is larger than the sum of its proper divisors (1).

53250581 is an equidigital number, since it uses as much as digits as its factorization.

53250581 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6000, while the sum is 29.

The square root of 53250581 is about 7297.2995690187. The cubic root of 53250581 is about 376.2196284576.

The spelling of 53250581 in words is "fifty-three million, two hundred fifty thousand, five hundred eighty-one".