55967143 has 4 divisors (see below), whose sum is σ = 55989360. Its totient is φ = 55944928.

The previous prime is 55967101. The next prime is 55967159. The reversal of 55967143 is 34176955.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34176955 = 5 ⋅6835391.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55967143 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55967096 and 55967105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55967243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6763 + ... + 12556.

It is an arithmetic number, because the mean of its divisors is an integer number (13997340).

Almost surely, 2^55967143 is an apocalyptic number.

55967143 is a deficient number, since it is larger than the sum of its proper divisors (22217).

55967143 is a wasteful number, since it uses less digits than its factorization.

55967143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22216.

The product of its digits is 113400, while the sum is 40.

The square root of 55967143 is about 7481.1191007763. The cubic root of 55967143 is about 382.5113967015.

The spelling of 55967143 in words is "fifty-five million, nine hundred sixty-seven thousand, one hundred forty-three".