653281 has 2 divisors, whose sum is σ = 653282. Its totient is φ = 653280.

The previous prime is 653273. The next prime is 653311. The reversal of 653281 is 182356.

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., 512656 + 140625 = 716^2 + 375^2 .

It is a cyclic number.

It is not a de Polignac number, because 653281 - 2³ = 653273 is a prime.

It is a super-2 number, since 2×653281² = 853552129922, which contains 22 as substring.

653281 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (653881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 326640 + 326641.

It is an arithmetic number, because the mean of its divisors is an integer number (326641).

2⁶⁵³²⁸¹ is an apocalyptic number.

It is an amenable number.

653281 is a deficient number, since it is larger than the sum of its proper divisors (1).

653281 is an equidigital number, since it uses as much as digits as its factorization.

653281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1440, while the sum is 25.

The square root of 653281 is about 808.2580033628. The cubic root of 653281 is about 86.7694162676.

The spelling of 653281 in words is "six hundred fifty-three thousand, two hundred eighty-one".