51878958 has 16 divisors (see below), whose sum is σ = 106562640. Its totient is φ = 16825536.

The previous prime is 51878947. The next prime is 51878963. The reversal of 51878958 is 85987815.

It is a self number, because there is not a number n which added to its sum of digits gives 51878958.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116623 + ... + 117066.

It is an arithmetic number, because the mean of its divisors is an integer number (6660165).

Almost surely, 2^51878958 is an apocalyptic number.

51878958 is an abundant number, since it is smaller than the sum of its proper divisors (54683682).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51878958 is a wasteful number, since it uses less digits than its factorization.

51878958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233731.

The product of its digits is 806400, while the sum is 51.

The square root of 51878958 is about 7202.7049085743. The cubic root of 51878958 is about 372.9612813109.

The spelling of 51878958 in words is "fifty-one million, eight hundred seventy-eight thousand, nine hundred fifty-eight".