52428281 has 2 divisors, whose sum is σ = 52428282. Its totient is φ = 52428280.

The previous prime is 52428263. The next prime is 52428283. The reversal of 52428281 is 18282425.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47045881 + 5382400 = 6859^2 + 2320^2 .

It is a cyclic number.

It is not a de Polignac number, because 52428281 - 2¹⁰ = 52427257 is a prime.

It is a super-2 number, since 2×52428281² = 5497449297229922, which contains 22 as substring.

Together with 52428283, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (52428283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26214140 + 26214141.

It is an arithmetic number, because the mean of its divisors is an integer number (26214141).

Almost surely, 2^52428281 is an apocalyptic number.

It is an amenable number.

52428281 is a deficient number, since it is larger than the sum of its proper divisors (1).

52428281 is an equidigital number, since it uses as much as digits as its factorization.

52428281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10240, while the sum is 32.

The square root of 52428281 is about 7240.7376005487. The cubic root of 52428281 is about 374.2730354894.

The spelling of 52428281 in words is "fifty-two million, four hundred twenty-eight thousand, two hundred eighty-one".