51470321 has 8 divisors (see below), whose sum is σ = 58953984. Its totient is φ = 44019360.

The previous prime is 51470303. The next prime is 51470351. The reversal of 51470321 is 12307415.

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

It is a de Polignac number, because none of the positive numbers 2^k-51470321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51470351) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4700 + ... + 11181.

It is an arithmetic number, because the mean of its divisors is an integer number (7369248).

Almost surely, 2^51470321 is an apocalyptic number.

It is an amenable number.

51470321 is a deficient number, since it is larger than the sum of its proper divisors (7483663).

51470321 is a wasteful number, since it uses less digits than its factorization.

51470321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16351.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 51470321 is about 7174.2819152860. The cubic root of 51470321 is about 371.9794594008.

Adding to 51470321 its reverse (12307415), we get a palindrome (63777736).

The spelling of 51470321 in words is "fifty-one million, four hundred seventy thousand, three hundred twenty-one".