51430630 has 16 divisors (see below), whose sum is σ = 95767920. Its totient is φ = 19862752.

The previous prime is 51430597. The next prime is 51430633. The reversal of 51430630 is 3603415.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51430633) 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, 88384 + ... + 88963.

It is an arithmetic number, because the mean of its divisors is an integer number (5985495).

Almost surely, 2^51430630 is an apocalyptic number.

51430630 is a deficient number, since it is larger than the sum of its proper divisors (44337290).

51430630 is a wasteful number, since it uses less digits than its factorization.

51430630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177383.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 51430630 is about 7171.5151816056. The cubic root of 51430630 is about 371.8838183065.

The spelling of 51430630 in words is "fifty-one million, four hundred thirty thousand, six hundred thirty".