51329801 has 4 divisors (see below), whose sum is σ = 51344592. Its totient is φ = 51315012.

The previous prime is 51329743. The next prime is 51329807. The reversal of 51329801 is 10892315.

51329801 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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 51329801 - 2¹⁴ = 51313417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51329807) 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, 950 + ... + 10176.

It is an arithmetic number, because the mean of its divisors is an integer number (12836148).

Almost surely, 2^51329801 is an apocalyptic number.

It is an amenable number.

51329801 is a deficient number, since it is larger than the sum of its proper divisors (14791).

51329801 is an equidigital number, since it uses as much as digits as its factorization.

51329801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14790.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 51329801 is about 7164.4819072980. The cubic root of 51329801 is about 371.6406350509.

The spelling of 51329801 in words is "fifty-one million, three hundred twenty-nine thousand, eight hundred one".