260513551 has 2 divisors, whose sum is σ = 260513552. Its totient is φ = 260513550.

The previous prime is 260513509. The next prime is 260513563. The reversal of 260513551 is 155315062.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 260513551 - 2¹³ = 260505359 is a prime.

It is equal to p_14222359 and since 260513551 and 14222359 have the same sum of digits, it is a Honaker prime.

It is a zygodrome in base 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (260543551) 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, 130256775 + 130256776.

It is an arithmetic number, because the mean of its divisors is an integer number (130256776).

Almost surely, 2^260513551 is an apocalyptic number.

260513551 is a deficient number, since it is larger than the sum of its proper divisors (1).

260513551 is an equidigital number, since it uses as much as digits as its factorization.

260513551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4500, while the sum is 28.

The square root of 260513551 is about 16140.4321813265. The cubic root of 260513551 is about 638.6703767795.

The spelling of 260513551 in words is "two hundred sixty million, five hundred thirteen thousand, five hundred fifty-one".