51866922 has 16 divisors (see below), whose sum is σ = 109193760. Its totient is φ = 16378992.

The previous prime is 51866921. The next prime is 51866923. The reversal of 51866922 is 22966815.

It is an interprime number because it is at equal distance from previous prime (51866921) and next prime (51866923).

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 in 7 ways as a sum of consecutive naturals, for example, 227373 + ... + 227600.

It is an arithmetic number, because the mean of its divisors is an integer number (6824610).

Almost surely, 2^51866922 is an apocalyptic number.

51866922 is an abundant number, since it is smaller than the sum of its proper divisors (57326838).

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

51866922 is a wasteful number, since it uses less digits than its factorization.

51866922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 454997.

The product of its digits is 51840, while the sum is 39.

The square root of 51866922 is about 7201.8693406643. The cubic root of 51866922 is about 372.9324365452.

The spelling of 51866922 in words is "fifty-one million, eight hundred sixty-six thousand, nine hundred twenty-two".