51871724 has 12 divisors (see below), whose sum is σ = 92989848. Its totient is φ = 25303200.

The previous prime is 51871697. The next prime is 51871733. The reversal of 51871724 is 42717815.

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, 157982 + ... + 158309.

It is an arithmetic number, because the mean of its divisors is an integer number (7749154).

Almost surely, 2^51871724 is an apocalyptic number.

It is an amenable number.

51871724 is a deficient number, since it is larger than the sum of its proper divisors (41118124).

51871724 is a wasteful number, since it uses less digits than its factorization.

51871724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316336 (or 316334 counting only the distinct ones).

The product of its digits is 15680, while the sum is 35.

The square root of 51871724 is about 7202.2027186132. The cubic root of 51871724 is about 372.9439452693.

The spelling of 51871724 in words is "fifty-one million, eight hundred seventy-one thousand, seven hundred twenty-four".