51878351 has 8 divisors (see below), whose sum is σ = 60125184. Its totient is φ = 43840440.

The previous prime is 51878297. The next prime is 51878369. The reversal of 51878351 is 15387815.

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

It is a de Polignac number, because none of the positive numbers 2^k-51878351 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51878371) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51695 + ... + 52688.

It is an arithmetic number, because the mean of its divisors is an integer number (7515648).

Almost surely, 2^51878351 is an apocalyptic number.

51878351 is a deficient number, since it is larger than the sum of its proper divisors (8246833).

51878351 is a wasteful number, since it uses less digits than its factorization.

51878351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104461.

The product of its digits is 33600, while the sum is 38.

The square root of 51878351 is about 7202.6627715033. The cubic root of 51878351 is about 372.9598267175.

The spelling of 51878351 in words is "fifty-one million, eight hundred seventy-eight thousand, three hundred fifty-one".