51280944 has 160 divisors (see below), whose sum is σ = 161323008. Its totient is φ = 13824000.

The previous prime is 51280921. The next prime is 51280951. The reversal of 51280944 is 44908215.

It is a super-2 number, since 2×51280944² = 5259470435062272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a zygodrome in base 2.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 212664 + ... + 212904.

Almost surely, 2^51280944 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 51280944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80661504).

51280944 is an abundant number, since it is smaller than the sum of its proper divisors (110042064).

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

51280944 is a wasteful number, since it uses less digits than its factorization.

51280944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307 (or 301 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 51280944 is about 7161.0714282152. The cubic root of 51280944 is about 371.5226853086.

The spelling of 51280944 in words is "fifty-one million, two hundred eighty thousand, nine hundred forty-four".