51112698 has 96 divisors (see below), whose sum is σ = 133516800. Its totient is φ = 12737088.

The previous prime is 51112697. The next prime is 51112729. The reversal of 51112698 is 89621115.

It is a super-2 number, since 2×51112698² = 5225015793678408, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51112697) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 134673 + ... + 135051.

It is an arithmetic number, because the mean of its divisors is an integer number (1390800).

Almost surely, 2^51112698 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51112698, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66758400).

51112698 is an abundant number, since it is smaller than the sum of its proper divisors (82404102).

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

51112698 is a wasteful number, since it uses less digits than its factorization.

51112698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436 (or 423 counting only the distinct ones).

The product of its digits is 4320, while the sum is 33.

The square root of 51112698 is about 7149.3145125949. The cubic root of 51112698 is about 371.1159345418.

The spelling of 51112698 in words is "fifty-one million, one hundred twelve thousand, six hundred ninety-eight".