55423871 has 4 divisors (see below), whose sum is σ = 55442352. Its totient is φ = 55405392.

The previous prime is 55423867. The next prime is 55423883. The reversal of 55423871 is 17832455.

It is a happy number.

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 55423871 - 2² = 55423867 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55423801) 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, 3590 + ... + 11123.

It is an arithmetic number, because the mean of its divisors is an integer number (13860588).

Almost surely, 2^55423871 is an apocalyptic number.

55423871 is a deficient number, since it is larger than the sum of its proper divisors (18481).

55423871 is a wasteful number, since it uses less digits than its factorization.

55423871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18480.

The product of its digits is 33600, while the sum is 35.

The square root of 55423871 is about 7444.7210155922. The cubic root of 55423871 is about 381.2696932943.

The spelling of 55423871 in words is "fifty-five million, four hundred twenty-three thousand, eight hundred seventy-one".