51125598 has 24 divisors (see below), whose sum is σ = 111119736. Its totient is φ = 16988400.

The previous prime is 51125597. The next prime is 51125617. The reversal of 51125598 is 89552115.

It is a happy number.

51125598 is a `hidden beast` number, since 51 + 12 + 5 + 598 = 666.

51125598 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×51125598² = 5227653541715208, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51125597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1668 + ... + 10248.

It is an arithmetic number, because the mean of its divisors is an integer number (4629989).

Almost surely, 2^51125598 is an apocalyptic number.

51125598 is an abundant number, since it is smaller than the sum of its proper divisors (59994138).

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

51125598 is a wasteful number, since it uses less digits than its factorization.

51125598 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8920 (or 8917 counting only the distinct ones).

The product of its digits is 18000, while the sum is 36.

The square root of 51125598 is about 7150.2166400746. The cubic root of 51125598 is about 371.1471530912.

The spelling of 51125598 in words is "fifty-one million, one hundred twenty-five thousand, five hundred ninety-eight".