51122886 has 8 divisors (see below), whose sum is σ = 102245784. Its totient is φ = 17040960.

The previous prime is 51122873. The next prime is 51122891. The reversal of 51122886 is 68822115.

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

51122886 is an admirable number.

It is a super-2 number, since 2×51122886² = 5227098945937992, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax 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, 4260235 + ... + 4260246.

It is an arithmetic number, because the mean of its divisors is an integer number (12780723).

Almost surely, 2^51122886 is an apocalyptic number.

51122886 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

51122886 is a wasteful number, since it uses less digits than its factorization.

51122886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8520486.

The product of its digits is 7680, while the sum is 33.

The square root of 51122886 is about 7150.0269929560. The cubic root of 51122886 is about 371.1405903717.

The spelling of 51122886 in words is "fifty-one million, one hundred twenty-two thousand, eight hundred eighty-six".