53138663 has 2 divisors, whose sum is σ = 53138664. Its totient is φ = 53138662.

The previous prime is 53138629. The next prime is 53138677. The reversal of 53138663 is 36683135.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 53138663 - 2¹⁰ = 53137639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53138693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26569331 + 26569332.

It is an arithmetic number, because the mean of its divisors is an integer number (26569332).

Almost surely, 2^53138663 is an apocalyptic number.

53138663 is a deficient number, since it is larger than the sum of its proper divisors (1).

53138663 is an equidigital number, since it uses as much as digits as its factorization.

53138663 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38880, while the sum is 35.

The square root of 53138663 is about 7289.6270823685. The cubic root of 53138663 is about 375.9558737073.

The spelling of 53138663 in words is "fifty-three million, one hundred thirty-eight thousand, six hundred sixty-three".