52691791 has 2 divisors, whose sum is σ = 52691792. Its totient is φ = 52691790.

The previous prime is 52691783. The next prime is 52691809. The reversal of 52691791 is 19719625.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 52691791 - 2³ = 52691783 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52691701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26345895 + 26345896.

It is an arithmetic number, because the mean of its divisors is an integer number (26345896).

Almost surely, 2^52691791 is an apocalyptic number.

52691791 is a deficient number, since it is larger than the sum of its proper divisors (1).

52691791 is an equidigital number, since it uses as much as digits as its factorization.

52691791 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34020, while the sum is 40.

The square root of 52691791 is about 7258.9111442420. The cubic root of 52691791 is about 374.8990329657.

The spelling of 52691791 in words is "fifty-two million, six hundred ninety-one thousand, seven hundred ninety-one".