51480772 has 18 divisors (see below), whose sum is σ = 104800542. Its totient is φ = 22063104.

The previous prime is 51480757. The next prime is 51480791. The reversal of 51480772 is 27708415.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 48219136 + 3261636 = 6944^2 + 1806^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 131133 + ... + 131524.

Almost surely, 2^51480772 is an apocalyptic number.

It is an amenable number.

51480772 is an abundant number, since it is smaller than the sum of its proper divisors (53319770).

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

51480772 is a wasteful number, since it uses less digits than its factorization.

51480772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262675 (or 262666 counting only the distinct ones).

The product of its (nonzero) digits is 15680, while the sum is 34.

The square root of 51480772 is about 7175.0102438951. The cubic root of 51480772 is about 372.0046343894.

The spelling of 51480772 in words is "fifty-one million, four hundred eighty thousand, seven hundred seventy-two".