51923898 has 60 divisors (see below), whose sum is σ = 123083298. Its totient is φ = 15818400.

The previous prime is 51923873. The next prime is 51923909. The reversal of 51923898 is 89832915.

It is a happy number.

51923898 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 5 ways, for example, as 471969 + 51451929 = 687^2 + 7173^2 .

It is an unprimeable number.

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 29 ways as a sum of consecutive naturals, for example, 514048 + ... + 514148.

Almost surely, 2^51923898 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51923898, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61541649).

51923898 is an abundant number, since it is smaller than the sum of its proper divisors (71159400).

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

51923898 is a wasteful number, since it uses less digits than its factorization.

51923898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161 (or 119 counting only the distinct ones).

The product of its digits is 155520, while the sum is 45.

The square root of 51923898 is about 7205.8238946008. The cubic root of 51923898 is about 373.0689424467.

The spelling of 51923898 in words is "fifty-one million, nine hundred twenty-three thousand, eight hundred ninety-eight".