260521453 has 2 divisors, whose sum is σ = 260521454. Its totient is φ = 260521452.

The previous prime is 260521441. The next prime is 260521487. The reversal of 260521453 is 354125062.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 255584169 + 4937284 = 15987^2 + 2222^2 .

It is a cyclic number.

It is not a de Polignac number, because 260521453 - 2⁹ = 260520941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (260521153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130260726 + 130260727.

It is an arithmetic number, because the mean of its divisors is an integer number (130260727).

Almost surely, 2^260521453 is an apocalyptic number.

It is an amenable number.

260521453 is a deficient number, since it is larger than the sum of its proper divisors (1).

260521453 is an equidigital number, since it uses as much as digits as its factorization.

260521453 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 260521453 is about 16140.6769684546. The cubic root of 260521453 is about 638.6768341817.

The spelling of 260521453 in words is "two hundred sixty million, five hundred twenty-one thousand, four hundred fifty-three".