52020481 has 2 divisors, whose sum is σ = 52020482. Its totient is φ = 52020480.

The previous prime is 52020467. The next prime is 52020491. The reversal of 52020481 is 18402025.

It is the 2945-th star number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43020481 + 9000000 = 6559^2 + 3000^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52020481 is a prime.

It is a super-2 number, since 2×52020481² = 5412260886942722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (52020491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26010240 + 26010241.

It is an arithmetic number, because the mean of its divisors is an integer number (26010241).

Almost surely, 2^52020481 is an apocalyptic number.

It is an amenable number.

52020481 is a deficient number, since it is larger than the sum of its proper divisors (1).

52020481 is an equidigital number, since it uses as much as digits as its factorization.

52020481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 52020481 is about 7212.5225129631. The cubic root of 52020481 is about 373.3001128143.

The spelling of 52020481 in words is "fifty-two million, twenty thousand, four hundred eighty-one".