51430668 has 24 divisors (see below), whose sum is σ = 125223168. Its totient is φ = 16398096.

The previous prime is 51430667. The next prime is 51430693. The reversal of 51430668 is 86603415.

It is a super-2 number, since 2×51430668² = 5290227221852448, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51430667) 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, 92896 + ... + 93447.

It is an arithmetic number, because the mean of its divisors is an integer number (5217632).

Almost surely, 2^51430668 is an apocalyptic number.

It is an amenable number.

51430668 is an abundant number, since it is smaller than the sum of its proper divisors (73792500).

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

51430668 is a wasteful number, since it uses less digits than its factorization.

51430668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186373 (or 186371 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 51430668 is about 7171.5178309755. The cubic root of 51430668 is about 371.8839098964.

The spelling of 51430668 in words is "fifty-one million, four hundred thirty thousand, six hundred sixty-eight".