53402443 has 2 divisors, whose sum is σ = 53402444. Its totient is φ = 53402442.

The previous prime is 53402411. The next prime is 53402471. The reversal of 53402443 is 34420435.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 53402443 - 2⁵ = 53402411 is a prime.

It is not a weakly prime, because it can be changed into another prime (53402143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26701221 + 26701222.

It is an arithmetic number, because the mean of its divisors is an integer number (26701222).

Almost surely, 2^53402443 is an apocalyptic number.

53402443 is a deficient number, since it is larger than the sum of its proper divisors (1).

53402443 is an equidigital number, since it uses as much as digits as its factorization.

53402443 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 25.

The square root of 53402443 is about 7307.6975170022. The cubic root of 53402443 is about 376.5769280917.

Adding to 53402443 its reverse (34420435), we get a palindrome (87822878).

The spelling of 53402443 in words is "fifty-three million, four hundred two thousand, four hundred forty-three".