52178664 has 32 divisors (see below), whose sum is σ = 130727520. Its totient is φ = 17355456.

The previous prime is 52178603. The next prime is 52178699. The reversal of 52178664 is 46687125.

52178664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×52178664² = 5445225953649792, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10474 + ... + 14630.

It is an arithmetic number, because the mean of its divisors is an integer number (4085235).

Almost surely, 2^52178664 is an apocalyptic number.

It is an amenable number.

52178664 is an abundant number, since it is smaller than the sum of its proper divisors (78548856).

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

52178664 is a wasteful number, since it uses less digits than its factorization.

52178664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4689 (or 4685 counting only the distinct ones).

The product of its digits is 80640, while the sum is 39.

The square root of 52178664 is about 7223.4800477332. The cubic root of 52178664 is about 373.6781048349.

The spelling of 52178664 in words is "fifty-two million, one hundred seventy-eight thousand, six hundred sixty-four".