51648878 has 8 divisors (see below), whose sum is σ = 81550920. Its totient is φ = 24465240.

The previous prime is 51648853. The next prime is 51648881. The reversal of 51648878 is 87884615.

It is a happy number.

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

It is a super-3 number, since 3×51648878³ (a number of 24 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 679553 + ... + 679628.

It is an arithmetic number, because the mean of its divisors is an integer number (10193865).

Almost surely, 2^51648878 is an apocalyptic number.

51648878 is a deficient number, since it is larger than the sum of its proper divisors (29902042).

51648878 is a wasteful number, since it uses less digits than its factorization.

51648878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1359202.

The product of its digits is 430080, while the sum is 47.

The square root of 51648878 is about 7186.7153832610. The cubic root of 51648878 is about 372.4091107469.

It can be divided in two parts, 516 and 48878, that added together give a palindrome (49394).

The spelling of 51648878 in words is "fifty-one million, six hundred forty-eight thousand, eight hundred seventy-eight".