55485871 has 8 divisors (see below), whose sum is σ = 66750080. Its totient is φ = 45056088.

The previous prime is 55485869. The next prime is 55485907. The reversal of 55485871 is 17858455.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55485871 - 2¹ = 55485869 is a prime.

It is a super-4 number, since 4×55485871⁴ (a number of 32 digits) contains 4444 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 (55485811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 208461 + ... + 208726.

It is an arithmetic number, because the mean of its divisors is an integer number (8343760).

Almost surely, 2^55485871 is an apocalyptic number.

55485871 is a deficient number, since it is larger than the sum of its proper divisors (11264209).

55485871 is a wasteful number, since it uses less digits than its factorization.

55485871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417213.

The product of its digits is 224000, while the sum is 43.

The square root of 55485871 is about 7448.8838761253. The cubic root of 55485871 is about 381.4118096275.

The spelling of 55485871 in words is "fifty-five million, four hundred eighty-five thousand, eight hundred seventy-one".