51930029 has 4 divisors (see below), whose sum is σ = 52555776. Its totient is φ = 51304284.

The previous prime is 51930023. The next prime is 51930037. The reversal of 51930029 is 92003915.

51930029 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51930029 - 2⁴ = 51930013 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 51929983 and 51930010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51930023) 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 3 ways as a sum of consecutive naturals, for example, 312749 + ... + 312914.

It is an arithmetic number, because the mean of its divisors is an integer number (13138944).

Almost surely, 2^51930029 is an apocalyptic number.

It is an amenable number.

51930029 is a deficient number, since it is larger than the sum of its proper divisors (625747).

51930029 is an equidigital number, since it uses as much as digits as its factorization.

51930029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 625746.

The product of its (nonzero) digits is 2430, while the sum is 29.

The square root of 51930029 is about 7206.2493018213. The cubic root of 51930029 is about 373.0836254459.

The spelling of 51930029 in words is "fifty-one million, nine hundred thirty thousand, twenty-nine".