56051671 has 4 divisors (see below), whose sum is σ = 60363352. Its totient is φ = 51739992.

The previous prime is 56051659. The next prime is 56051773. The reversal of 56051671 is 17615065.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 56051671 - 2¹⁵ = 56018903 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 (56051651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2155821 + ... + 2155846.

It is an arithmetic number, because the mean of its divisors is an integer number (15090838).

Almost surely, 2^56051671 is an apocalyptic number.

56051671 is a deficient number, since it is larger than the sum of its proper divisors (4311681).

56051671 is a wasteful number, since it uses less digits than its factorization.

56051671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4311680.

The product of its (nonzero) digits is 6300, while the sum is 31.

The square root of 56051671 is about 7486.7663914403. The cubic root of 56051671 is about 382.7038706997.

The spelling of 56051671 in words is "fifty-six million, fifty-one thousand, six hundred seventy-one".