261461063 has 2 divisors, whose sum is σ = 261461064. Its totient is φ = 261461062.

The previous prime is 261461017. The next prime is 261461069. The reversal of 261461063 is 360164162.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 261461063 - 2⁶ = 261460999 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (261461069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130730531 + 130730532.

It is an arithmetic number, because the mean of its divisors is an integer number (130730532).

Almost surely, 2^261461063 is an apocalyptic number.

261461063 is a deficient number, since it is larger than the sum of its proper divisors (1).

261461063 is an equidigital number, since it uses as much as digits as its factorization.

261461063 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 261461063 is about 16169.7576667061. The cubic root of 261461063 is about 639.4437411118.

The spelling of 261461063 in words is "two hundred sixty-one million, four hundred sixty-one thousand, sixty-three".