55671871 has 2 divisors, whose sum is σ = 55671872. Its totient is φ = 55671870.

The previous prime is 55671827. The next prime is 55671893. The reversal of 55671871 is 17817655.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55671871 - 2¹⁷ = 55540799 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55678871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27835935 + 27835936.

It is an arithmetic number, because the mean of its divisors is an integer number (27835936).

Almost surely, 2^55671871 is an apocalyptic number.

55671871 is a deficient number, since it is larger than the sum of its proper divisors (1).

55671871 is an equidigital number, since it uses as much as digits as its factorization.

55671871 is an evil number, because the sum of its binary digits is even.

The product of its digits is 58800, while the sum is 40.

The square root of 55671871 is about 7461.3585224140. The cubic root of 55671871 is about 381.8375244461.

It can be divided in two parts, 556 and 71871, that added together give a palindrome (72427).

The spelling of 55671871 in words is "fifty-five million, six hundred seventy-one thousand, eight hundred seventy-one".