52463981 has 2 divisors, whose sum is σ = 52463982. Its totient is φ = 52463980.

The previous prime is 52463963. The next prime is 52464001. The reversal of 52463981 is 18936425.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52330756 + 133225 = 7234^2 + 365^2 .

It is a cyclic number.

It is not a de Polignac number, because 52463981 - 2¹⁸ = 52201837 is a prime.

It is a super-2 number, since 2×52463981² = 5504938604736722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52463951) 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, 26231990 + 26231991.

It is an arithmetic number, because the mean of its divisors is an integer number (26231991).

Almost surely, 2^52463981 is an apocalyptic number.

It is an amenable number.

52463981 is a deficient number, since it is larger than the sum of its proper divisors (1).

52463981 is an equidigital number, since it uses as much as digits as its factorization.

52463981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51840, while the sum is 38.

The square root of 52463981 is about 7243.2023994915. The cubic root of 52463981 is about 374.3579674861.

The spelling of 52463981 in words is "fifty-two million, four hundred sixty-three thousand, nine hundred eighty-one".