51116872 has 16 divisors (see below), whose sum is σ = 96042240. Its totient is φ = 25505616.

The previous prime is 51116837. The next prime is 51116881. The reversal of 51116872 is 27861115.

It is a super-2 number, since 2×51116872² = 5225869206128768, which contains 22 as substring.

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, 2328 + ... + 10375.

It is an arithmetic number, because the mean of its divisors is an integer number (6002640).

Almost surely, 2^51116872 is an apocalyptic number.

It is an amenable number.

51116872 is a deficient number, since it is larger than the sum of its proper divisors (44925368).

51116872 is a wasteful number, since it uses less digits than its factorization.

51116872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13212 (or 13208 counting only the distinct ones).

The product of its digits is 3360, while the sum is 31.

The square root of 51116872 is about 7149.6064227341. The cubic root of 51116872 is about 371.1260363744.

Adding to 51116872 its reverse (27861115), we get a palindrome (78977987).

The spelling of 51116872 in words is "fifty-one million, one hundred sixteen thousand, eight hundred seventy-two".