261480556 has 6 divisors (see below), whose sum is σ = 457590980. Its totient is φ = 130740276.

The previous prime is 261480533. The next prime is 261480563. The reversal of 261480556 is 655084162.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32685066 + ... + 32685073.

Almost surely, 2^261480556 is an apocalyptic number.

It is an amenable number.

261480556 is a deficient number, since it is larger than the sum of its proper divisors (196110424).

261480556 is a wasteful number, since it uses less digits than its factorization.

261480556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65370143 (or 65370141 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 37.

The square root of 261480556 is about 16170.3604165151. The cubic root of 261480556 is about 639.4596317724.

The spelling of 261480556 in words is "two hundred sixty-one million, four hundred eighty thousand, five hundred fifty-six".