55169871 has 4 divisors (see below), whose sum is σ = 73559832. Its totient is φ = 36779912.

The previous prime is 55169867. The next prime is 55169921. The reversal of 55169871 is 17896155.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55169871 - 2² = 55169867 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55169831) 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, 9194976 + ... + 9194981.

It is an arithmetic number, because the mean of its divisors is an integer number (18389958).

Almost surely, 2^55169871 is an apocalyptic number.

55169871 is a deficient number, since it is larger than the sum of its proper divisors (18389961).

55169871 is a wasteful number, since it uses less digits than its factorization.

55169871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18389960.

The product of its digits is 75600, while the sum is 42.

The square root of 55169871 is about 7427.6423581107. The cubic root of 55169871 is about 380.6863657088.

The spelling of 55169871 in words is "fifty-five million, one hundred sixty-nine thousand, eight hundred seventy-one".