51107112 has 160 divisors (see below), whose sum is σ = 172497600. Its totient is φ = 13810176.

The previous prime is 51107107. The next prime is 51107113. The reversal of 51107112 is 21170115.

It is a happy number.

It is a super-2 number, since 2×51107112² = 5223873793961088, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (51107113) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 85888 + ... + 86480.

It is an arithmetic number, because the mean of its divisors is an integer number (1078110).

Almost surely, 2^51107112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51107112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86248800).

51107112 is an abundant number, since it is smaller than the sum of its proper divisors (121390488).

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

51107112 is a wasteful number, since it uses less digits than its factorization.

51107112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 637 (or 624 counting only the distinct ones).

The product of its (nonzero) digits is 70, while the sum is 18.

The square root of 51107112 is about 7148.9238350957. The cubic root of 51107112 is about 371.1024145542.

Adding to 51107112 its reverse (21170115), we get a palindrome (72277227).

The spelling of 51107112 in words is "fifty-one million, one hundred seven thousand, one hundred twelve".