53243969 has 2 divisors, whose sum is σ = 53243970. Its totient is φ = 53243968.

The previous prime is 53243941. The next prime is 53243989. The reversal of 53243969 is 96934235.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45064369 + 8179600 = 6713^2 + 2860^2 .

It is a cyclic number.

It is not a de Polignac number, because 53243969 - 2⁸ = 53243713 is a prime.

It is a super-2 number, since 2×53243969² = 5669840469745922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (53243929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26621984 + 26621985.

It is an arithmetic number, because the mean of its divisors is an integer number (26621985).

Almost surely, 2^53243969 is an apocalyptic number.

It is an amenable number.

53243969 is a deficient number, since it is larger than the sum of its proper divisors (1).

53243969 is an equidigital number, since it uses as much as digits as its factorization.

53243969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 174960, while the sum is 41.

The square root of 53243969 is about 7296.8465106510. The cubic root of 53243969 is about 376.2040563762.

The spelling of 53243969 in words is "fifty-three million, two hundred forty-three thousand, nine hundred sixty-nine".