47784261 has 12 divisors (see below), whose sum is σ = 74114592. Its totient is φ = 27305208.

The previous prime is 47784251. The next prime is 47784283. The reversal of 47784261 is 16248774.

It is not a de Polignac number, because 47784261 - 2¹⁰ = 47783237 is a prime.

It is a super-2 number, since 2×47784261² = 4566671198632242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47784251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 162385 + ... + 162678.

It is an arithmetic number, because the mean of its divisors is an integer number (6176216).

Almost surely, 2^47784261 is an apocalyptic number.

It is an amenable number.

47784261 is a deficient number, since it is larger than the sum of its proper divisors (26330331).

47784261 is a wasteful number, since it uses less digits than its factorization.

47784261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325080 (or 325073 counting only the distinct ones).

The product of its digits is 75264, while the sum is 39.

The square root of 47784261 is about 6912.6160749748. The cubic root of 47784261 is about 362.8788233225.

The spelling of 47784261 in words is "forty-seven million, seven hundred eighty-four thousand, two hundred sixty-one".