52121868 has 12 divisors (see below), whose sum is σ = 121617720. Its totient is φ = 17373952.

The previous prime is 52121857. The next prime is 52121879. The reversal of 52121868 is 86812125.

It is an interprime number because it is at equal distance from previous prime (52121857) and next prime (52121879).

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2171733 + ... + 2171756.

It is an arithmetic number, because the mean of its divisors is an integer number (10134810).

Almost surely, 2^52121868 is an apocalyptic number.

It is an amenable number.

52121868 is an abundant number, since it is smaller than the sum of its proper divisors (69495852).

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

52121868 is a wasteful number, since it uses less digits than its factorization.

52121868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4343496 (or 4343494 counting only the distinct ones).

The product of its digits is 7680, while the sum is 33.

The square root of 52121868 is about 7219.5476312578. The cubic root of 52121868 is about 373.5424738753.

The spelling of 52121868 in words is "fifty-two million, one hundred twenty-one thousand, eight hundred sixty-eight".