51859998 has 24 divisors (see below), whose sum is σ = 115105536. Its totient is φ = 16864800.

The previous prime is 51859991. The next prime is 51860071. The reversal of 51859998 is 89995815.

51859998 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51859991) 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, 34398 + ... + 35873.

It is an arithmetic number, because the mean of its divisors is an integer number (4796064).

Almost surely, 2^51859998 is an apocalyptic number.

51859998 is an abundant number, since it is smaller than the sum of its proper divisors (63245538).

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

51859998 is a wasteful number, since it uses less digits than its factorization.

51859998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70320 (or 70317 counting only the distinct ones).

The product of its digits is 1166400, while the sum is 54.

The square root of 51859998 is about 7201.3886160934. The cubic root of 51859998 is about 372.9158408743.

It can be divided in two parts, 518 and 59998, that added together give a square (60516 = 246²).

The spelling of 51859998 in words is "fifty-one million, eight hundred fifty-nine thousand, nine hundred ninety-eight".