51437988 has 72 divisors (see below), whose sum is σ = 157352832. Its totient is φ = 13830912.

The previous prime is 51437963. The next prime is 51437989. The reversal of 51437988 is 88973415.

It is not an unprimeable number, because it can be changed into a prime (51437989) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1720 + ... + 10287.

It is an arithmetic number, because the mean of its divisors is an integer number (2185456).

Almost surely, 2^51437988 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51437988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78676416).

51437988 is an abundant number, since it is smaller than the sum of its proper divisors (105914844).

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

51437988 is a wasteful number, since it uses less digits than its factorization.

51437988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12041 (or 12036 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 51437988 is about 7172.0281650311. The cubic root of 51437988 is about 371.9015521657.

It can be divided in two parts, 51437 and 988, that added together give a palindrome (52425).

The spelling of 51437988 in words is "fifty-one million, four hundred thirty-seven thousand, nine hundred eighty-eight".