53660281 has 2 divisors, whose sum is σ = 53660282. Its totient is φ = 53660280.

The previous prime is 53660261. The next prime is 53660291. The reversal of 53660281 is 18206635.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45104656 + 8555625 = 6716^2 + 2925^2 .

It is a cyclic number.

It is not a de Polignac number, because 53660281 - 2¹¹ = 53658233 is a prime.

It is a super-2 number, since 2×53660281² = 5758851513997922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (53660261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26830140 + 26830141.

It is an arithmetic number, because the mean of its divisors is an integer number (26830141).

Almost surely, 2^53660281 is an apocalyptic number.

It is an amenable number.

53660281 is a deficient number, since it is larger than the sum of its proper divisors (1).

53660281 is an equidigital number, since it uses as much as digits as its factorization.

53660281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 53660281 is about 7325.3178088053. The cubic root of 53660281 is about 377.1820189708.

The spelling of 53660281 in words is "fifty-three million, six hundred sixty thousand, two hundred eighty-one".