51879518 has 8 divisors (see below), whose sum is σ = 77874048. Its totient is φ = 25921504.

The previous prime is 51879511. The next prime is 51879539. The reversal of 51879518 is 81597815.

It is a happy number.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51879511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5246 + ... + 11457.

It is an arithmetic number, because the mean of its divisors is an integer number (9734256).

Almost surely, 2^51879518 is an apocalyptic number.

51879518 is a deficient number, since it is larger than the sum of its proper divisors (25994530).

51879518 is a wasteful number, since it uses less digits than its factorization.

51879518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18258.

The product of its digits is 100800, while the sum is 44.

The square root of 51879518 is about 7202.7437827539. The cubic root of 51879518 is about 372.9626232652.

The spelling of 51879518 in words is "fifty-one million, eight hundred seventy-nine thousand, five hundred eighteen".