51162886 has 4 divisors (see below), whose sum is σ = 76744332. Its totient is φ = 25581442.

The previous prime is 51162883. The next prime is 51162887. The reversal of 51162886 is 68826115.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51162883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12790720 + ... + 12790723.

It is an arithmetic number, because the mean of its divisors is an integer number (19186083).

Almost surely, 2^51162886 is an apocalyptic number.

51162886 is a deficient number, since it is larger than the sum of its proper divisors (25581446).

51162886 is a wasteful number, since it uses less digits than its factorization.

51162886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25581445.

The product of its digits is 23040, while the sum is 37.

The square root of 51162886 is about 7152.8236382564. The cubic root of 51162886 is about 371.2373621216.

The spelling of 51162886 in words is "fifty-one million, one hundred sixty-two thousand, eight hundred eighty-six".