53525309 has 2 divisors, whose sum is σ = 53525310. Its totient is φ = 53525308.

The previous prime is 53525287. The next prime is 53525323. The reversal of 53525309 is 90352535.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39062500 + 14462809 = 6250^2 + 3803^2 .

It is a cyclic number.

It is not a de Polignac number, because 53525309 - 2¹⁶ = 53459773 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53525369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26762654 + 26762655.

It is an arithmetic number, because the mean of its divisors is an integer number (26762655).

Almost surely, 2^53525309 is an apocalyptic number.

It is an amenable number.

53525309 is a deficient number, since it is larger than the sum of its proper divisors (1).

53525309 is an equidigital number, since it uses as much as digits as its factorization.

53525309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20250, while the sum is 32.

The square root of 53525309 is about 7316.0993022238. The cubic root of 53525309 is about 376.8655107816.

The spelling of 53525309 in words is "fifty-three million, five hundred twenty-five thousand, three hundred nine".