509054171 has 4 divisors (see below), whose sum is σ = 538998552. Its totient is φ = 479109792.

The previous prime is 509054159. The next prime is 509054173. The reversal of 509054171 is 171450905.

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 509054171 - 2¹⁰ = 509053147 is a prime.

It is a super-2 number, since 2×509054171² = 518272298024994482, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (509054173) 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, 14972165 + ... + 14972198.

It is an arithmetic number, because the mean of its divisors is an integer number (134749638).

Almost surely, 2^509054171 is an apocalyptic number.

509054171 is a deficient number, since it is larger than the sum of its proper divisors (29944381).

509054171 is a wasteful number, since it uses less digits than its factorization.

509054171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29944380.

The product of its (nonzero) digits is 6300, while the sum is 32.

The square root of 509054171 is about 22562.2288570965. The cubic root of 509054171 is about 798.4627620790.

The spelling of 509054171 in words is "five hundred nine million, fifty-four thousand, one hundred seventy-one".