260155531 has 2 divisors, whose sum is σ = 260155532. Its totient is φ = 260155530.

The previous prime is 260155523. The next prime is 260155541. The reversal of 260155531 is 135551062.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 260155531 - 2³ = 260155523 is a prime.

It is a super-2 number, since 2×260155531² = 135361800619783922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 260155531.

It is not a weakly prime, because it can be changed into another prime (260155541) 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, 130077765 + 130077766.

It is an arithmetic number, because the mean of its divisors is an integer number (130077766).

Almost surely, 2^260155531 is an apocalyptic number.

260155531 is a deficient number, since it is larger than the sum of its proper divisors (1).

260155531 is an equidigital number, since it uses as much as digits as its factorization.

260155531 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 260155531 is about 16129.3375871423. The cubic root of 260155531 is about 638.3776708351.

The spelling of 260155531 in words is "two hundred sixty million, one hundred fifty-five thousand, five hundred thirty-one".