56281547 has 12 divisors (see below), whose sum is σ = 67729680. Its totient is φ = 46576656.

The previous prime is 56281531. The next prime is 56281549. The reversal of 56281547 is 74518265.

It is not a de Polignac number, because 56281547 - 2⁴ = 56281531 is a prime.

It is a super-2 number, since 2×56281547² = 6335225065426418, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56281547.

It is not an unprimeable number, because it can be changed into a prime (56281549) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18383 + ... + 21224.

It is an arithmetic number, because the mean of its divisors is an integer number (5644140).

Almost surely, 2^56281547 is an apocalyptic number.

56281547 is a deficient number, since it is larger than the sum of its proper divisors (11448133).

56281547 is a wasteful number, since it uses less digits than its factorization.

56281547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39650 (or 39643 counting only the distinct ones).

The product of its digits is 67200, while the sum is 38.

The square root of 56281547 is about 7502.1028385380. The cubic root of 56281547 is about 383.2263317396.

The spelling of 56281547 in words is "fifty-six million, two hundred eighty-one thousand, five hundred forty-seven".