51472280 has 16 divisors (see below), whose sum is σ = 115812720. Its totient is φ = 20588896.

The previous prime is 51472259. The next prime is 51472297. The reversal of 51472280 is 8227415.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 643364 + ... + 643443.

It is an arithmetic number, because the mean of its divisors is an integer number (7238295).

Almost surely, 2^51472280 is an apocalyptic number.

It is an amenable number.

51472280 is an abundant number, since it is smaller than the sum of its proper divisors (64340440).

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

51472280 is a wasteful number, since it uses less digits than its factorization.

51472280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1286818 (or 1286814 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 29.

The square root of 51472280 is about 7174.4184433304. The cubic root of 51472280 is about 371.9841786157.

Adding to 51472280 its reverse (8227415), we get a palindrome (59699695).

The spelling of 51472280 in words is "fifty-one million, four hundred seventy-two thousand, two hundred eighty".