52188761 has 4 divisors (see below), whose sum is σ = 52695552. Its totient is φ = 51681972.

The previous prime is 52188707. The next prime is 52188767. The reversal of 52188761 is 16788125.

52188761 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52188761 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (52188767) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 253241 + ... + 253446.

It is an arithmetic number, because the mean of its divisors is an integer number (13173888).

Almost surely, 2^52188761 is an apocalyptic number.

It is an amenable number.

52188761 is a deficient number, since it is larger than the sum of its proper divisors (506791).

52188761 is a wasteful number, since it uses less digits than its factorization.

52188761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506790.

The product of its digits is 26880, while the sum is 38.

The square root of 52188761 is about 7224.1789152817. The cubic root of 52188761 is about 373.7022065410.

The spelling of 52188761 in words is "fifty-two million, one hundred eighty-eight thousand, seven hundred sixty-one".