53725909 has 2 divisors, whose sum is σ = 53725910. Its totient is φ = 53725908.

The previous prime is 53725879. The next prime is 53725927. The reversal of 53725909 is 90952735.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42315025 + 11410884 = 6505^2 + 3378^2 .

It is a cyclic number.

It is not a de Polignac number, because 53725909 - 2⁷ = 53725781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53725979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26862954 + 26862955.

It is an arithmetic number, because the mean of its divisors is an integer number (26862955).

Almost surely, 2^53725909 is an apocalyptic number.

It is an amenable number.

53725909 is a deficient number, since it is larger than the sum of its proper divisors (1).

53725909 is an equidigital number, since it uses as much as digits as its factorization.

53725909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 85050, while the sum is 40.

The square root of 53725909 is about 7329.7959726039. The cubic root of 53725909 is about 377.3357243214.

The spelling of 53725909 in words is "fifty-three million, seven hundred twenty-five thousand, nine hundred nine".