51778712 has 16 divisors (see below), whose sum is σ = 97167840. Its totient is φ = 25867296.

The previous prime is 51778709. The next prime is 51778729. The reversal of 51778712 is 21787715.

It is a congruent number.

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, 11633 + ... + 15455.

It is an arithmetic number, because the mean of its divisors is an integer number (6072990).

Almost surely, 2^51778712 is an apocalyptic number.

It is an amenable number.

51778712 is a deficient number, since it is larger than the sum of its proper divisors (45389128).

51778712 is a wasteful number, since it uses less digits than its factorization.

51778712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5522 (or 5518 counting only the distinct ones).

The product of its digits is 27440, while the sum is 38.

The square root of 51778712 is about 7195.7426301946. The cubic root of 51778712 is about 372.7209013603.

The spelling of 51778712 in words is "fifty-one million, seven hundred seventy-eight thousand, seven hundred twelve".