56143705 has 8 divisors (see below), whose sum is σ = 67435272. Its totient is φ = 44873088.

The previous prime is 56143693. The next prime is 56143721. The reversal of 56143705 is 50734165.

It can be written as a sum of positive squares in 4 ways, for example, as 3087049 + 53056656 = 1757^2 + 7284^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 56143705 - 2⁹ = 56143193 is a prime.

It is a super-2 number, since 2×56143705² = 6304231222254050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1437 + ... + 10693.

It is an arithmetic number, because the mean of its divisors is an integer number (8429409).

Almost surely, 2^56143705 is an apocalyptic number.

It is an amenable number.

56143705 is a deficient number, since it is larger than the sum of its proper divisors (11291567).

56143705 is a wasteful number, since it uses less digits than its factorization.

56143705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10475.

The product of its (nonzero) digits is 12600, while the sum is 31.

The square root of 56143705 is about 7492.9103157585. The cubic root of 56143705 is about 382.9132162763.

The spelling of 56143705 in words is "fifty-six million, one hundred forty-three thousand, seven hundred five".