260550421 has 2 divisors, whose sum is σ = 260550422. Its totient is φ = 260550420.

The previous prime is 260550397. The next prime is 260550461. The reversal of 260550421 is 124055062.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 259371025 + 1179396 = 16105^2 + 1086^2 .

It is a cyclic number.

It is not a de Polignac number, because 260550421 - 2¹¹ = 260548373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (260550461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130275210 + 130275211.

It is an arithmetic number, because the mean of its divisors is an integer number (130275211).

Almost surely, 2^260550421 is an apocalyptic number.

It is an amenable number.

260550421 is a deficient number, since it is larger than the sum of its proper divisors (1).

260550421 is an equidigital number, since it uses as much as digits as its factorization.

260550421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 260550421 is about 16141.5743036421. The cubic root of 260550421 is about 638.7005053031.

The spelling of 260550421 in words is "two hundred sixty million, five hundred fifty thousand, four hundred twenty-one".