52188121 has 4 divisors (see below), whose sum is σ = 53461044. Its totient is φ = 50915200.

The previous prime is 52188119. The next prime is 52188133. The reversal of 52188121 is 12188125.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7096896 + 45091225 = 2664^2 + 6715^2 .

It is a cyclic number.

It is not a de Polignac number, because 52188121 - 2¹ = 52188119 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 52188121.

It is not an unprimeable number, because it can be changed into a prime (52189121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 636400 + ... + 636481.

It is an arithmetic number, because the mean of its divisors is an integer number (13365261).

Almost surely, 2^52188121 is an apocalyptic number.

It is an amenable number.

52188121 is a deficient number, since it is larger than the sum of its proper divisors (1272923).

52188121 is a wasteful number, since it uses less digits than its factorization.

52188121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1272922.

The product of its digits is 1280, while the sum is 28.

The square root of 52188121 is about 7224.1346194544. The cubic root of 52188121 is about 373.7006789427.

The spelling of 52188121 in words is "fifty-two million, one hundred eighty-eight thousand, one hundred twenty-one".