51321011 has 8 divisors (see below), whose sum is σ = 62102880. Its totient is φ = 41401728.

The previous prime is 51320999. The next prime is 51321037. The reversal of 51321011 is 11012315.

51321011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51321011 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51321041) 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 7 ways as a sum of consecutive naturals, for example, 215516 + ... + 215753.

It is an arithmetic number, because the mean of its divisors is an integer number (7762860).

Almost surely, 2^51321011 is an apocalyptic number.

51321011 is a deficient number, since it is larger than the sum of its proper divisors (10781869).

51321011 is a wasteful number, since it uses less digits than its factorization.

51321011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431293.

The product of its (nonzero) digits is 30, while the sum is 14.

The square root of 51321011 is about 7163.8684382113. The cubic root of 51321011 is about 371.6194199048.

Adding to 51321011 its reverse (11012315), we get a palindrome (62333326).

The spelling of 51321011 in words is "fifty-one million, three hundred twenty-one thousand, eleven".