51174980 has 48 divisors (see below), whose sum is σ = 114065280. Its totient is φ = 19231488.

The previous prime is 51174943. The next prime is 51174989. The reversal of 51174980 is 8947115.

It is a self number, because there is not a number n which added to its sum of digits gives 51174980.

It is not an unprimeable number, because it can be changed into a prime (51174989) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51569 + ... + 52551.

It is an arithmetic number, because the mean of its divisors is an integer number (2376360).

Almost surely, 2^51174980 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 51174980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57032640).

51174980 is an abundant number, since it is smaller than the sum of its proper divisors (62890300).

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

51174980 is a wasteful number, since it uses less digits than its factorization.

51174980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1148 (or 1146 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 35.

The square root of 51174980 is about 7153.6689887078. The cubic root of 51174980 is about 371.2666111293.

The spelling of 51174980 in words is "fifty-one million, one hundred seventy-four thousand, nine hundred eighty".