51107858 has 4 divisors (see below), whose sum is σ = 76661790. Its totient is φ = 25553928.

The previous prime is 51107857. The next prime is 51107869. The reversal of 51107858 is 85870115.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 85870115 = 5 ⋅17174023.

It can be written as a sum of positive squares in only one way, i.e., 35796289 + 15311569 = 5983^2 + 3913^2 .

It is a super-2 number, since 2×51107858² = 5224026298696328, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51107857) by changing a digit.

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 as a sum of consecutive naturals, namely, 12776963 + ... + 12776966.

Almost surely, 2^51107858 is an apocalyptic number.

51107858 is a deficient number, since it is larger than the sum of its proper divisors (25553932).

51107858 is a wasteful number, since it uses less digits than its factorization.

51107858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25553931.

The product of its (nonzero) digits is 11200, while the sum is 35.

The square root of 51107858 is about 7148.9760105906. The cubic root of 51107858 is about 371.1042201806.

The spelling of 51107858 in words is "fifty-one million, one hundred seven thousand, eight hundred fifty-eight".