56669143 has 6 divisors (see below), whose sum is σ = 60199016. Its totient is φ = 53335392.

The previous prime is 56669117. The next prime is 56669167. The reversal of 56669143 is 34196665.

It is a de Polignac number, because none of the positive numbers 2^k-56669143 is a prime.

It is a super-2 number, since 2×56669143² = 6422783536708898, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56669096 and 56669105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56669443) 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, 97755 + ... + 98332.

Almost surely, 2^56669143 is an apocalyptic number.

56669143 is a deficient number, since it is larger than the sum of its proper divisors (3529873).

56669143 is a wasteful number, since it uses less digits than its factorization.

56669143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196121 (or 196104 counting only the distinct ones).

The product of its digits is 116640, while the sum is 40.

The square root of 56669143 is about 7527.8910061185. The cubic root of 56669143 is about 384.1040457896.

The spelling of 56669143 in words is "fifty-six million, six hundred sixty-nine thousand, one hundred forty-three".