53238791 has 2 divisors, whose sum is σ = 53238792. Its totient is φ = 53238790.

The previous prime is 53238739. The next prime is 53238833. The reversal of 53238791 is 19783235.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53238791 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53238701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26619395 + 26619396.

It is an arithmetic number, because the mean of its divisors is an integer number (26619396).

Almost surely, 2^53238791 is an apocalyptic number.

53238791 is a deficient number, since it is larger than the sum of its proper divisors (1).

53238791 is an equidigital number, since it uses as much as digits as its factorization.

53238791 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45360, while the sum is 38.

The square root of 53238791 is about 7296.4916912171. The cubic root of 53238791 is about 376.1918606427.

The spelling of 53238791 in words is "fifty-three million, two hundred thirty-eight thousand, seven hundred ninety-one".