51117612 has 48 divisors (see below), whose sum is σ = 146802432. Its totient is φ = 13481280.

The previous prime is 51117607. The next prime is 51117631. The reversal of 51117612 is 21671115.

It is a super-3 number, since 3×51117612³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22314 + ... + 24497.

It is an arithmetic number, because the mean of its divisors is an integer number (3058384).

Almost surely, 2^51117612 is an apocalyptic number.

51117612 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

51117612 is an abundant number, since it is smaller than the sum of its proper divisors (95684820).

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

51117612 is a wasteful number, since it uses less digits than its factorization.

51117612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46838 (or 46836 counting only the distinct ones).

The product of its digits is 420, while the sum is 24.

The square root of 51117612 is about 7149.6581736472. The cubic root of 51117612 is about 371.1278272504.

Adding to 51117612 its reverse (21671115), we get a palindrome (72788727).

The spelling of 51117612 in words is "fifty-one million, one hundred seventeen thousand, six hundred twelve".