51197712 has 20 divisors (see below), whose sum is σ = 132260880. Its totient is φ = 17065888.

The previous prime is 51197687. The next prime is 51197717. The reversal of 51197712 is 21779115.

It is not an unprimeable number, because it can be changed into a prime (51197717) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 533262 + ... + 533357.

It is an arithmetic number, because the mean of its divisors is an integer number (6613044).

Almost surely, 2^51197712 is an apocalyptic number.

It is an amenable number.

51197712 is an abundant number, since it is smaller than the sum of its proper divisors (81063168).

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

51197712 is a wasteful number, since it uses less digits than its factorization.

51197712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1066630 (or 1066624 counting only the distinct ones).

The product of its digits is 4410, while the sum is 33.

The square root of 51197712 is about 7155.2576473527. The cubic root of 51197712 is about 371.3215753799.

The spelling of 51197712 in words is "fifty-one million, one hundred ninety-seven thousand, seven hundred twelve".