53331791 has 2 divisors, whose sum is σ = 53331792. Its totient is φ = 53331790.

The previous prime is 53331769. The next prime is 53331809. The reversal of 53331791 is 19713335.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53331791 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 (53331701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26665895 + 26665896.

It is an arithmetic number, because the mean of its divisors is an integer number (26665896).

Almost surely, 2^53331791 is an apocalyptic number.

53331791 is a deficient number, since it is larger than the sum of its proper divisors (1).

53331791 is an equidigital number, since it uses as much as digits as its factorization.

53331791 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8505, while the sum is 32.

The square root of 53331791 is about 7302.8618362940. The cubic root of 53331791 is about 376.4107830393.

The spelling of 53331791 in words is "fifty-three million, three hundred thirty-one thousand, seven hundred ninety-one".