51866924 has 6 divisors (see below), whose sum is σ = 90767124. Its totient is φ = 25933460.

The previous prime is 51866923. The next prime is 51866929. The reversal of 51866924 is 42966815.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (51866921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6483362 + ... + 6483369.

It is an arithmetic number, because the mean of its divisors is an integer number (15127854).

Almost surely, 2^51866924 is an apocalyptic number.

It is an amenable number.

51866924 is a deficient number, since it is larger than the sum of its proper divisors (38900200).

51866924 is a wasteful number, since it uses less digits than its factorization.

51866924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12966735 (or 12966733 counting only the distinct ones).

The product of its digits is 103680, while the sum is 41.

The square root of 51866924 is about 7201.8694795171. The cubic root of 51866924 is about 372.9324413386.

The spelling of 51866924 in words is "fifty-one million, eight hundred sixty-six thousand, nine hundred twenty-four".