51020960 has 24 divisors (see below), whose sum is σ = 120537396. Its totient is φ = 20408320.

The previous prime is 51020929. The next prime is 51020993. The reversal of 51020960 is 6902015.

It can be written as a sum of positive squares in 2 ways, for example, as 49392784 + 1628176 = 7028^2 + 1276^2 .

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, 159281 + ... + 159600.

Almost surely, 2^51020960 is an apocalyptic number.

It is an amenable number.

51020960 is an abundant number, since it is smaller than the sum of its proper divisors (69516436).

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

51020960 is a wasteful number, since it uses less digits than its factorization.

51020960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318896 (or 318888 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 51020960 is about 7142.8957713241. The cubic root of 51020960 is about 370.8937730325.

Adding to 51020960 its reverse (6902015), we get a palindrome (57922975).

The spelling of 51020960 in words is "fifty-one million, twenty thousand, nine hundred sixty".