52673281 has 2 divisors, whose sum is σ = 52673282. Its totient is φ = 52673280.

The previous prime is 52673279. The next prime is 52673321. The reversal of 52673281 is 18237625.

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., 49575681 + 3097600 = 7041^2 + 1760^2 .

It is a cyclic number.

It is not a de Polignac number, because 52673281 - 2¹ = 52673279 is a prime.

It is a super-2 number, since 2×52673281² = 5548949062609922, which contains 22 as substring.

Together with 52673279, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (52673081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26336640 + 26336641.

It is an arithmetic number, because the mean of its divisors is an integer number (26336641).

Almost surely, 2^52673281 is an apocalyptic number.

It is an amenable number.

52673281 is a deficient number, since it is larger than the sum of its proper divisors (1).

52673281 is an equidigital number, since it uses as much as digits as its factorization.

52673281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20160, while the sum is 34.

The square root of 52673281 is about 7257.6360476398. The cubic root of 52673281 is about 374.8551286326.

The spelling of 52673281 in words is "fifty-two million, six hundred seventy-three thousand, two hundred eighty-one".