53891291 has 2 divisors, whose sum is σ = 53891292. Its totient is φ = 53891290.

The previous prime is 53891267. The next prime is 53891293. The reversal of 53891291 is 19219835.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 53891291 - 2¹⁴ = 53874907 is a prime.

It is a super-3 number, since 3×53891291³ (a number of 24 digits) contains 333 as substring.

It is a Sophie Germain prime.

Together with 53891293, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (53891293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26945645 + 26945646.

It is an arithmetic number, because the mean of its divisors is an integer number (26945646).

Almost surely, 2^53891291 is an apocalyptic number.

53891291 is a deficient number, since it is larger than the sum of its proper divisors (1).

53891291 is an equidigital number, since it uses as much as digits as its factorization.

53891291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19440, while the sum is 38.

The square root of 53891291 is about 7341.0687913954. The cubic root of 53891291 is about 377.7225061358.

The spelling of 53891291 in words is "fifty-three million, eight hundred ninety-one thousand, two hundred ninety-one".