53225509 has 2 divisors, whose sum is σ = 53225510. Its totient is φ = 53225508.

The previous prime is 53225477. The next prime is 53225533. The reversal of 53225509 is 90552235.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29430625 + 23794884 = 5425^2 + 4878^2 .

It is a cyclic number.

It is not a de Polignac number, because 53225509 - 2⁵ = 53225477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53225569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26612754 + 26612755.

It is an arithmetic number, because the mean of its divisors is an integer number (26612755).

Almost surely, 2^53225509 is an apocalyptic number.

It is an amenable number.

53225509 is a deficient number, since it is larger than the sum of its proper divisors (1).

53225509 is an equidigital number, since it uses as much as digits as its factorization.

53225509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13500, while the sum is 31.

The square root of 53225509 is about 7295.5814710001. The cubic root of 53225509 is about 376.1605739577.

The spelling of 53225509 in words is "fifty-three million, two hundred twenty-five thousand, five hundred nine".