52443491 has 2 divisors, whose sum is σ = 52443492. Its totient is φ = 52443490.

The previous prime is 52443481. The next prime is 52443527. The reversal of 52443491 is 19434425.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52443491 is a prime.

It is a Sophie Germain prime.

It is equal to p_3138755 and since 52443491 and 3138755 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (52443421) 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, 26221745 + 26221746.

It is an arithmetic number, because the mean of its divisors is an integer number (26221746).

Almost surely, 2^52443491 is an apocalyptic number.

52443491 is a deficient number, since it is larger than the sum of its proper divisors (1).

52443491 is an equidigital number, since it uses as much as digits as its factorization.

52443491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17280, while the sum is 32.

The square root of 52443491 is about 7241.7878317443. The cubic root of 52443491 is about 374.3092255148.

The spelling of 52443491 in words is "fifty-two million, four hundred forty-three thousand, four hundred ninety-one".