55417871 has 4 divisors (see below), whose sum is σ = 55440000. Its totient is φ = 55395744.

The previous prime is 55417867. The next prime is 55417891. The reversal of 55417871 is 17871455.

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 55417871 - 2² = 55417867 is a prime.

It is a super-2 number, since 2×55417871² = 6142280852345282, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55417891) 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, 6746 + ... + 12503.

It is an arithmetic number, because the mean of its divisors is an integer number (13860000).

Almost surely, 2^55417871 is an apocalyptic number.

55417871 is a deficient number, since it is larger than the sum of its proper divisors (22129).

55417871 is a wasteful number, since it uses less digits than its factorization.

55417871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22128.

The product of its digits is 39200, while the sum is 38.

The square root of 55417871 is about 7444.3180345818. The cubic root of 55417871 is about 381.2559344772.

The spelling of 55417871 in words is "fifty-five million, four hundred seventeen thousand, eight hundred seventy-one".