52557768 has 64 divisors (see below), whose sum is σ = 148780800. Its totient is φ = 17184960.

The previous prime is 52557767. The next prime is 52557823. The reversal of 52557768 is 86775525.

52557768 is a `hidden beast` number, since 525 + 57 + 76 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (52557763) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9153 + ... + 13743.

It is an arithmetic number, because the mean of its divisors is an integer number (2324700).

Almost surely, 2^52557768 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 52557768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74390400).

52557768 is an abundant number, since it is smaller than the sum of its proper divisors (96223032).

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

52557768 is a wasteful number, since it uses less digits than its factorization.

52557768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4659 (or 4649 counting only the distinct ones).

The product of its digits is 588000, while the sum is 45.

The square root of 52557768 is about 7249.6736478272. The cubic root of 52557768 is about 374.5809078058.

The spelling of 52557768 in words is "fifty-two million, five hundred fifty-seven thousand, seven hundred sixty-eight".