53446909 has 2 divisors, whose sum is σ = 53446910. Its totient is φ = 53446908.

The previous prime is 53446889. The next prime is 53446927. The reversal of 53446909 is 90964435.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52925625 + 521284 = 7275^2 + 722^2 .

It is a cyclic number.

It is not a de Polignac number, because 53446909 - 2⁷ = 53446781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53446969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26723454 + 26723455.

It is an arithmetic number, because the mean of its divisors is an integer number (26723455).

Almost surely, 2^53446909 is an apocalyptic number.

It is an amenable number.

53446909 is a deficient number, since it is larger than the sum of its proper divisors (1).

53446909 is an equidigital number, since it uses as much as digits as its factorization.

53446909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 116640, while the sum is 40.

The square root of 53446909 is about 7310.7392923014. The cubic root of 53446909 is about 376.6814190931.

The spelling of 53446909 in words is "fifty-three million, four hundred forty-six thousand, nine hundred nine".