53997143 has 2 divisors, whose sum is σ = 53997144. Its totient is φ = 53997142.

The previous prime is 53997127. The next prime is 53997149. The reversal of 53997143 is 34179935.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 53997143 - 2⁴ = 53997127 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 53997143.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53997149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26998571 + 26998572.

It is an arithmetic number, because the mean of its divisors is an integer number (26998572).

Almost surely, 2^53997143 is an apocalyptic number.

53997143 is a deficient number, since it is larger than the sum of its proper divisors (1).

53997143 is an equidigital number, since it uses as much as digits as its factorization.

53997143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 102060, while the sum is 41.

The square root of 53997143 is about 7348.2748315506. The cubic root of 53997143 is about 377.9696489353.

The spelling of 53997143 in words is "fifty-three million, nine hundred ninety-seven thousand, one hundred forty-three".