51788898 has 48 divisors (see below), whose sum is σ = 129205440. Its totient is φ = 14685408.

The previous prime is 51788887. The next prime is 51788911. The reversal of 51788898 is 89888715.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16036 + ... + 18992.

It is an arithmetic number, because the mean of its divisors is an integer number (2691780).

Almost surely, 2^51788898 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51788898, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64602720).

51788898 is an abundant number, since it is smaller than the sum of its proper divisors (77416542).

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

51788898 is a wasteful number, since it uses less digits than its factorization.

51788898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3111 (or 3108 counting only the distinct ones).

The product of its digits is 1290240, while the sum is 54.

The square root of 51788898 is about 7196.4503750113. The cubic root of 51788898 is about 372.7453405299.

The spelling of 51788898 in words is "fifty-one million, seven hundred eighty-eight thousand, eight hundred ninety-eight".