51266488 has 48 divisors (see below), whose sum is σ = 118979280. Its totient is φ = 20277504.

The previous prime is 51266477. The next prime is 51266491. The reversal of 51266488 is 88466215.

It is a self number, because there is not a number n which added to its sum of digits gives 51266488.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6756 + ... + 12172.

It is an arithmetic number, because the mean of its divisors is an integer number (2478735).

Almost surely, 2^51266488 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 51266488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59489640).

51266488 is an abundant number, since it is smaller than the sum of its proper divisors (67712792).

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

51266488 is a wasteful number, since it uses less digits than its factorization.

51266488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5456 (or 5439 counting only the distinct ones).

The product of its digits is 92160, while the sum is 40.

The square root of 51266488 is about 7160.0620109047. The cubic root of 51266488 is about 371.4877715163.

The spelling of 51266488 in words is "fifty-one million, two hundred sixty-six thousand, four hundred eighty-eight".