51074280 has 192 divisors, whose sum is σ = 181051200. Its totient is φ = 12804480.

The previous prime is 51074269. The next prime is 51074281. The reversal of 51074280 is 8247015.

51074280 is a `hidden beast` number, since 510 + 74 + 2 + 80 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51074281) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 389815 + ... + 389945.

It is an arithmetic number, because the mean of its divisors is an integer number (942975).

Almost surely, 2^51074280 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 51074280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90525600).

51074280 is an abundant number, since it is smaller than the sum of its proper divisors (129976920).

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

51074280 is a wasteful number, since it uses less digits than its factorization.

51074280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189 (or 160 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 51074280 is about 7146.6271765078. The cubic root of 51074280 is about 371.0229302189.

The spelling of 51074280 in words is "fifty-one million, seventy-four thousand, two hundred eighty".