53239999 has 2 divisors, whose sum is σ = 53240000. Its totient is φ = 53239998.

The previous prime is 53239933. The next prime is 53240021. The reversal of 53239999 is 99993235.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 53239999 - 2¹⁷ = 53108927 is a prime.

It is a Chen prime.

53239999 is a modest number, since divided by 9999 gives 5323 as remainder.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53239499) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26619999 + 26620000.

It is an arithmetic number, because the mean of its divisors is an integer number (26620000).

Almost surely, 2^53239999 is an apocalyptic number.

53239999 is a deficient number, since it is larger than the sum of its proper divisors (1).

53239999 is an equidigital number, since it uses as much as digits as its factorization.

53239999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 590490, while the sum is 49.

The square root of 53239999 is about 7296.5744702566. The cubic root of 53239999 is about 376.1947059135.

The spelling of 53239999 in words is "fifty-three million, two hundred thirty-nine thousand, nine hundred ninety-nine".