51414321 has 16 divisors (see below), whose sum is σ = 79228800. Its totient is φ = 29048448.

The previous prime is 51414313. The next prime is 51414347. The reversal of 51414321 is 12341415.

It is not a de Polignac number, because 51414321 - 2³ = 51414313 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (51414301) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11886 + ... + 15623.

It is an arithmetic number, because the mean of its divisors is an integer number (4951800).

Almost surely, 2^51414321 is an apocalyptic number.

It is an amenable number.

51414321 is a deficient number, since it is larger than the sum of its proper divisors (27814479).

51414321 is a wasteful number, since it uses less digits than its factorization.

51414321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27608.

The product of its digits is 480, while the sum is 21.

The square root of 51414321 is about 7170.3780235075. The cubic root of 51414321 is about 371.8445051943.

Adding to 51414321 its reverse (12341415), we get a palindrome (63755736).

The spelling of 51414321 in words is "fifty-one million, four hundred fourteen thousand, three hundred twenty-one".