55015171 has 4 divisors (see below), whose sum is σ = 55245600. Its totient is φ = 54784744.

The previous prime is 55015159. The next prime is 55015187. The reversal of 55015171 is 17151055.

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 55015171 - 2¹³ = 55006979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55015771) 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, 114856 + ... + 115333.

It is an arithmetic number, because the mean of its divisors is an integer number (13811400).

Almost surely, 2^55015171 is an apocalyptic number.

55015171 is a deficient number, since it is larger than the sum of its proper divisors (230429).

55015171 is a wasteful number, since it uses less digits than its factorization.

55015171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230428.

The product of its (nonzero) digits is 875, while the sum is 25.

The square root of 55015171 is about 7417.2212451834. The cubic root of 55015171 is about 380.3302092809.

The spelling of 55015171 in words is "fifty-five million, fifteen thousand, one hundred seventy-one".