56281671 has 6 divisors (see below), whose sum is σ = 81295760. Its totient is φ = 37521108.

The previous prime is 56281669. The next prime is 56281703. The reversal of 56281671 is 17618265.

It is not a de Polignac number, because 56281671 - 2¹ = 56281669 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56281471) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3126751 + ... + 3126768.

Almost surely, 2^56281671 is an apocalyptic number.

56281671 is a deficient number, since it is larger than the sum of its proper divisors (25014089).

56281671 is a wasteful number, since it uses less digits than its factorization.

56281671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6253525 (or 6253522 counting only the distinct ones).

The product of its digits is 20160, while the sum is 36.

The square root of 56281671 is about 7502.1111028830. Note that the first 4 decimals coincide. The cubic root of 56281671 is about 383.2266131820.

The spelling of 56281671 in words is "fifty-six million, two hundred eighty-one thousand, six hundred seventy-one".