51715280 has 40 divisors (see below), whose sum is σ = 122516712. Its totient is φ = 20294144.

The previous prime is 51715271. The next prime is 51715297. The reversal of 51715280 is 8251715.

It can be written as a sum of positive squares in 4 ways, for example, as 13868176 + 37847104 = 3724^2 + 6152^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1859 + ... + 10338.

Almost surely, 2^51715280 is an apocalyptic number.

It is an amenable number.

51715280 is an abundant number, since it is smaller than the sum of its proper divisors (70801432).

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

51715280 is a wasteful number, since it uses less digits than its factorization.

51715280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12263 (or 12257 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 29.

The square root of 51715280 is about 7191.3336732487. Note that the first 3 decimals coincide. The cubic root of 51715280 is about 372.5686374128.

Adding to 51715280 its reverse (8251715), we get a palindrome (59966995).

The spelling of 51715280 in words is "fifty-one million, seven hundred fifteen thousand, two hundred eighty".