51988678 has 8 divisors (see below), whose sum is σ = 89123472. Its totient is φ = 22280856.

The previous prime is 51988667. The next prime is 51988679. The reversal of 51988678 is 87688915.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51988679) by changing a digit.

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, 1856725 + ... + 1856752.

It is an arithmetic number, because the mean of its divisors is an integer number (11140434).

Almost surely, 2^51988678 is an apocalyptic number.

51988678 is a deficient number, since it is larger than the sum of its proper divisors (37134794).

51988678 is a wasteful number, since it uses less digits than its factorization.

51988678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3713486.

The product of its digits is 967680, while the sum is 52.

The square root of 51988678 is about 7210.3174687388. The cubic root of 51988678 is about 373.2240242979.

The spelling of 51988678 in words is "fifty-one million, nine hundred eighty-eight thousand, six hundred seventy-eight".