51878914 has 8 divisors (see below), whose sum is σ = 79094268. Its totient is φ = 25514160.

The previous prime is 51878887. The next prime is 51878933. The reversal of 51878914 is 41987815.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 51768025 + 110889 = 7195^2 + 333^2 .

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

It is an unprimeable number.

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, 212497 + ... + 212740.

Almost surely, 2^51878914 is an apocalyptic number.

51878914 is a deficient number, since it is larger than the sum of its proper divisors (27215354).

51878914 is a wasteful number, since it uses less digits than its factorization.

51878914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425300.

The product of its digits is 80640, while the sum is 43.

The square root of 51878914 is about 7202.7018541656. The cubic root of 51878914 is about 372.9611758713.

The spelling of 51878914 in words is "fifty-one million, eight hundred seventy-eight thousand, nine hundred fourteen".