51629830 has 24 divisors (see below), whose sum is σ = 108107568. Its totient is φ = 17701488.

The previous prime is 51629819. The next prime is 51629839. The reversal of 51629830 is 3892615.

51629830 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51629839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52194 + ... + 53173.

It is an arithmetic number, because the mean of its divisors is an integer number (4504482).

Almost surely, 2^51629830 is an apocalyptic number.

51629830 is an abundant number, since it is smaller than the sum of its proper divisors (56477738).

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

51629830 is a wasteful number, since it uses less digits than its factorization.

51629830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105388 (or 105381 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 51629830 is about 7185.3900381260. The cubic root of 51629830 is about 372.3633238797.

The spelling of 51629830 in words is "fifty-one million, six hundred twenty-nine thousand, eight hundred thirty".