51111848 has 8 divisors (see below), whose sum is σ = 95834730. Its totient is φ = 25555920.

The previous prime is 51111787. The next prime is 51111857. The reversal of 51111848 is 84811115.

It can be written as a sum of positive squares in only one way, i.e., 51008164 + 103684 = 7142^2 + 322^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×51111848² = 5224842011950208, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51111848.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3194483 + ... + 3194498.

Almost surely, 2^51111848 is an apocalyptic number.

It is an amenable number.

51111848 is a deficient number, since it is larger than the sum of its proper divisors (44722882).

51111848 is a wasteful number, since it uses less digits than its factorization.

51111848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6388987 (or 6388983 counting only the distinct ones).

The product of its digits is 1280, while the sum is 29.

The square root of 51111848 is about 7149.2550660891. The cubic root of 51111848 is about 371.1138773212.

The spelling of 51111848 in words is "fifty-one million, one hundred eleven thousand, eight hundred forty-eight".