260221651 has 2 divisors, whose sum is σ = 260221652. Its totient is φ = 260221650.

The previous prime is 260221639. The next prime is 260221673. The reversal of 260221651 is 156122062.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 260221651 - 2⁷ = 260221523 is a prime.

It is not a weakly prime, because it can be changed into another prime (260291651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130110825 + 130110826.

It is an arithmetic number, because the mean of its divisors is an integer number (130110826).

Almost surely, 2^260221651 is an apocalyptic number.

260221651 is a deficient number, since it is larger than the sum of its proper divisors (1).

260221651 is an equidigital number, since it uses as much as digits as its factorization.

260221651 is an odious number, because the sum of its binary digits is odd.

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

The square root of 260221651 is about 16131.3871381230. The cubic root of 260221651 is about 638.4317486862.

The spelling of 260221651 in words is "two hundred sixty million, two hundred twenty-one thousand, six hundred fifty-one".