52443581 has 2 divisors, whose sum is σ = 52443582. Its totient is φ = 52443580.

The previous prime is 52443577. The next prime is 52443593. The reversal of 52443581 is 18534425.

52443581 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51351556 + 1092025 = 7166^2 + 1045^2 .

It is a cyclic number.

It is not a de Polignac number, because 52443581 - 2² = 52443577 is a prime.

It is a super-2 number, since 2×52443581² = 5500658376207122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52443481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26221790 + 26221791.

It is an arithmetic number, because the mean of its divisors is an integer number (26221791).

Almost surely, 2^52443581 is an apocalyptic number.

It is an amenable number.

52443581 is a deficient number, since it is larger than the sum of its proper divisors (1).

52443581 is an equidigital number, since it uses as much as digits as its factorization.

52443581 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19200, while the sum is 32.

The square root of 52443581 is about 7241.7940456768. The cubic root of 52443581 is about 374.3094396361.

The spelling of 52443581 in words is "fifty-two million, four hundred forty-three thousand, five hundred eighty-one".