52171518 has 32 divisors (see below), whose sum is σ = 120132864. Its totient is φ = 14795712.

The previous prime is 52171507. The next prime is 52171523. The reversal of 52171518 is 81517125.

52171518 is a Rhonda number in base 15.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1221 + ... + 10287.

It is an arithmetic number, because the mean of its divisors is an integer number (3754152).

Almost surely, 2^52171518 is an apocalyptic number.

52171518 is an abundant number, since it is smaller than the sum of its proper divisors (67961346).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

52171518 is a wasteful number, since it uses less digits than its factorization.

52171518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9216.

The product of its digits is 2800, while the sum is 30.

The square root of 52171518 is about 7222.9853938659. The cubic root of 52171518 is about 373.6610453355.

The spelling of 52171518 in words is "fifty-two million, one hundred seventy-one thousand, five hundred eighteen".