51988711 has 4 divisors (see below), whose sum is σ = 52095952. Its totient is φ = 51881472.

The previous prime is 51988681. The next prime is 51988723. The reversal of 51988711 is 11788915.

51988711 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.

It is a cyclic number.

It is not a de Polignac number, because 51988711 - 2⁵ = 51988679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51988511) 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, 52890 + ... + 53863.

It is an arithmetic number, because the mean of its divisors is an integer number (13023988).

Almost surely, 2^51988711 is an apocalyptic number.

51988711 is a deficient number, since it is larger than the sum of its proper divisors (107241).

51988711 is a wasteful number, since it uses less digits than its factorization.

51988711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107240.

The product of its digits is 20160, while the sum is 40.

The square root of 51988711 is about 7210.3197571259. The cubic root of 51988711 is about 373.2241032663.

The spelling of 51988711 in words is "fifty-one million, nine hundred eighty-eight thousand, seven hundred eleven".