53443129 has 2 divisors, whose sum is σ = 53443130. Its totient is φ = 53443128.

The previous prime is 53443127. The next prime is 53443147. The reversal of 53443129 is 92134435.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31136400 + 22306729 = 5580^2 + 4723^2 .

It is a cyclic number.

It is not a de Polignac number, because 53443129 - 2¹ = 53443127 is a prime.

Together with 53443127, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 53443129.

It is not a weakly prime, because it can be changed into another prime (53443127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26721564 + 26721565.

It is an arithmetic number, because the mean of its divisors is an integer number (26721565).

Almost surely, 2^53443129 is an apocalyptic number.

It is an amenable number.

53443129 is a deficient number, since it is larger than the sum of its proper divisors (1).

53443129 is an equidigital number, since it uses as much as digits as its factorization.

53443129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960, while the sum is 31.

The square root of 53443129 is about 7310.4807639443. The cubic root of 53443129 is about 376.6725386960.

The spelling of 53443129 in words is "fifty-three million, four hundred forty-three thousand, one hundred twenty-nine".