51688814 has 16 divisors (see below), whose sum is σ = 79403328. Its totient is φ = 25224192.

The previous prime is 51688807. The next prime is 51688829. The reversal of 51688814 is 41888615.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53762 + ... + 54714.

It is an arithmetic number, because the mean of its divisors is an integer number (4962708).

Almost surely, 2^51688814 is an apocalyptic number.

51688814 is a deficient number, since it is larger than the sum of its proper divisors (27714514).

51688814 is a wasteful number, since it uses less digits than its factorization.

51688814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1579.

The product of its digits is 61440, while the sum is 41.

The square root of 51688814 is about 7189.4933062073. The cubic root of 51688814 is about 372.5050708737.

The spelling of 51688814 in words is "fifty-one million, six hundred eighty-eight thousand, eight hundred fourteen".