53699999 has 2 divisors, whose sum is σ = 53700000. Its totient is φ = 53699998.

The previous prime is 53699981. The next prime is 53700001. The reversal of 53699999 is 99999635.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 53699999 - 2¹² = 53695903 is a prime.

Together with 53700001, it forms a pair of twin primes.

It is a Chen prime.

53699999 is a modest number, since divided by 9999 gives 5369 as remainder.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53699929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26849999 + 26850000.

It is an arithmetic number, because the mean of its divisors is an integer number (26850000).

Almost surely, 2^53699999 is an apocalyptic number.

53699999 is a deficient number, since it is larger than the sum of its proper divisors (1).

53699999 is an equidigital number, since it uses as much as digits as its factorization.

53699999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5314410, while the sum is 59.

The square root of 53699999 is about 7328.0283159933. The cubic root of 53699999 is about 377.2750562571.

The spelling of 53699999 in words is "fifty-three million, six hundred ninety-nine thousand, nine hundred ninety-nine".