55131671 has 16 divisors (see below), whose sum is σ = 65845248. Its totient is φ = 45165600.

The previous prime is 55131647. The next prime is 55131679. The reversal of 55131671 is 17613155.

It is a cyclic number.

It is not a de Polignac number, because 55131671 - 2¹⁴ = 55115287 is a prime.

It is a super-2 number, since 2×55131671² = 6079002294504482, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55131679) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16481 + ... + 19541.

It is an arithmetic number, because the mean of its divisors is an integer number (4115328).

Almost surely, 2^55131671 is an apocalyptic number.

55131671 is a deficient number, since it is larger than the sum of its proper divisors (10713577).

55131671 is a wasteful number, since it uses less digits than its factorization.

55131671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3182.

The product of its digits is 3150, while the sum is 29.

The square root of 55131671 is about 7425.0704373763. The cubic root of 55131671 is about 380.5984821317.

It can be divided in two parts, 55131 and 671, that multiplied together give a triangular number (36992901 = T₈₆₀₁).

The spelling of 55131671 in words is "fifty-five million, one hundred thirty-one thousand, six hundred seventy-one".