52667891 has 2 divisors, whose sum is σ = 52667892. Its totient is φ = 52667890.

The previous prime is 52667873. The next prime is 52667893. The reversal of 52667891 is 19876625.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52667891 is a prime.

Together with 52667893, 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 (52667893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26333945 + 26333946.

It is an arithmetic number, because the mean of its divisors is an integer number (26333946).

Almost surely, 2^52667891 is an apocalyptic number.

52667891 is a deficient number, since it is larger than the sum of its proper divisors (1).

52667891 is an equidigital number, since it uses as much as digits as its factorization.

52667891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 181440, while the sum is 44.

The square root of 52667891 is about 7257.2647051076. The cubic root of 52667891 is about 374.8423420228.

The spelling of 52667891 in words is "fifty-two million, six hundred sixty-seven thousand, eight hundred ninety-one".