51984906 has 16 divisors (see below), whose sum is σ = 105394944. Its totient is φ = 17090784.

The previous prime is 51984901. The next prime is 51984913. The reversal of 51984906 is 60948915.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51984901) 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 7 ways as a sum of consecutive naturals, for example, 58906 + ... + 59781.

It is an arithmetic number, because the mean of its divisors is an integer number (6587184).

Almost surely, 2^51984906 is an apocalyptic number.

51984906 is an abundant number, since it is smaller than the sum of its proper divisors (53410038).

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

51984906 is a wasteful number, since it uses less digits than its factorization.

51984906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118765.

The product of its (nonzero) digits is 77760, while the sum is 42.

The square root of 51984906 is about 7210.0558943742. The cubic root of 51984906 is about 373.2149977488.

The spelling of 51984906 in words is "fifty-one million, nine hundred eighty-four thousand, nine hundred six".