51130768 has 20 divisors (see below), whose sum is σ = 106686748. Its totient is φ = 23598720.

The previous prime is 51130753. The next prime is 51130777. The reversal of 51130768 is 86703115.

It can be written as a sum of positive squares in 2 ways, for example, as 6615184 + 44515584 = 2572^2 + 6672^2 .

It is a super-2 number, since 2×51130768² = 5228710872539648, which contains 22 as substring.

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, 122703 + ... + 123118.

Almost surely, 2^51130768 is an apocalyptic number.

It is an amenable number.

51130768 is an abundant number, since it is smaller than the sum of its proper divisors (55555980).

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

51130768 is a wasteful number, since it uses less digits than its factorization.

51130768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245842 (or 245836 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 51130768 is about 7150.5781584429. The cubic root of 51130768 is about 371.1596632373.

The spelling of 51130768 in words is "fifty-one million, one hundred thirty thousand, seven hundred sixty-eight".