56611143 has 10 divisors (see below), whose sum is σ = 84567384. Its totient is φ = 37740708.

The previous prime is 56611133. The next prime is 56611151. The reversal of 56611143 is 34111665.

56611143 is a `hidden beast` number, since 5 + 6 + 611 + 1 + 43 = 666.

It is not a de Polignac number, because 56611143 - 2⁸ = 56610887 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56611133) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 349371 + ... + 349532.

Almost surely, 2^56611143 is an apocalyptic number.

56611143 is a deficient number, since it is larger than the sum of its proper divisors (27956241).

56611143 is an equidigital number, since it uses as much as digits as its factorization.

56611143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 698915 (or 698906 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 56611143 is about 7524.0376793315. The cubic root of 56611143 is about 383.9729595217.

The spelling of 56611143 in words is "fifty-six million, six hundred eleven thousand, one hundred forty-three".