52166520 has 192 divisors, whose sum is σ = 196485120. Its totient is φ = 11757312.

The previous prime is 52166519. The next prime is 52166537. The reversal of 52166520 is 2566125.

52166520 is a `hidden beast` number, since 5 + 2 + 1 + 6 + 652 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 319959 + ... + 320121.

It is an arithmetic number, because the mean of its divisors is an integer number (1023360).

Almost surely, 2^52166520 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52166520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98242560).

52166520 is an abundant number, since it is smaller than the sum of its proper divisors (144318600).

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

52166520 is a wasteful number, since it uses less digits than its factorization.

52166520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314 (or 307 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 52166520 is about 7222.6394067543. The cubic root of 52166520 is about 373.6491127868.

The spelling of 52166520 in words is "fifty-two million, one hundred sixty-six thousand, five hundred twenty".