53997539 has 2 divisors, whose sum is σ = 53997540. Its totient is φ = 53997538.

The previous prime is 53997523. The next prime is 53997569. The reversal of 53997539 is 93579935.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 53997539 - 2⁴ = 53997523 is a prime.

It is not a weakly prime, because it can be changed into another prime (53997569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26998769 + 26998770.

It is an arithmetic number, because the mean of its divisors is an integer number (26998770).

Almost surely, 2^53997539 is an apocalyptic number.

53997539 is a deficient number, since it is larger than the sum of its proper divisors (1).

53997539 is an equidigital number, since it uses as much as digits as its factorization.

53997539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1148175, while the sum is 50.

The square root of 53997539 is about 7348.3017766012. The cubic root of 53997539 is about 377.9705729077.

The spelling of 53997539 in words is "fifty-three million, nine hundred ninety-seven thousand, five hundred thirty-nine".