53369909 has 2 divisors, whose sum is σ = 53369910. Its totient is φ = 53369908.

The previous prime is 53369881. The next prime is 53369933. The reversal of 53369909 is 90996335.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53333809 + 36100 = 7303^2 + 190^2 .

It is a cyclic number.

It is not a de Polignac number, because 53369909 - 2⁸ = 53369653 is a prime.

It is a super-4 number, since 4×53369909⁴ (a number of 32 digits) contains 4444 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 53369909.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53369969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26684954 + 26684955.

It is an arithmetic number, because the mean of its divisors is an integer number (26684955).

Almost surely, 2^53369909 is an apocalyptic number.

It is an amenable number.

53369909 is a deficient number, since it is larger than the sum of its proper divisors (1).

53369909 is an equidigital number, since it uses as much as digits as its factorization.

53369909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 196830, while the sum is 44.

The square root of 53369909 is about 7305.4711689254. The cubic root of 53369909 is about 376.5004394399.

The spelling of 53369909 in words is "fifty-three million, three hundred sixty-nine thousand, nine hundred nine".