51095780 has 12 divisors (see below), whose sum is σ = 107301180. Its totient is φ = 20438304.

The previous prime is 51095777. The next prime is 51095797. The reversal of 51095780 is 8759015.

It can be written as a sum of positive squares in 2 ways, for example, as 20448484 + 30647296 = 4522^2 + 5536^2 .

It is a super-2 number, since 2×51095780² = 5221557467616800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51095780.

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, 1277375 + ... + 1277414.

It is an arithmetic number, because the mean of its divisors is an integer number (8941765).

Almost surely, 2^51095780 is an apocalyptic number.

It is an amenable number.

51095780 is an abundant number, since it is smaller than the sum of its proper divisors (56205400).

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

51095780 is a wasteful number, since it uses less digits than its factorization.

51095780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2554798 (or 2554796 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 35.

The square root of 51095780 is about 7148.1312243131. The cubic root of 51095780 is about 371.0749842987.

The spelling of 51095780 in words is "fifty-one million, ninety-five thousand, seven hundred eighty".