51341809 has 8 divisors (see below), whose sum is σ = 52727528. Its totient is φ = 49973760.

The previous prime is 51341777. The next prime is 51341821. The reversal of 51341809 is 90814315.

It can be written as a sum of positive squares in 4 ways, for example, as 176400 + 51165409 = 420^2 + 7153^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 51341809 - 2⁵ = 51341777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51341839) 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, 1579 + ... + 10255.

It is an arithmetic number, because the mean of its divisors is an integer number (6590941).

Almost surely, 2^51341809 is an apocalyptic number.

It is an amenable number.

51341809 is a deficient number, since it is larger than the sum of its proper divisors (1385719).

51341809 is an equidigital number, since it uses as much as digits as its factorization.

51341809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8835.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 51341809 is about 7165.3198812056. The cubic root of 51341809 is about 371.6696131020.

The spelling of 51341809 in words is "fifty-one million, three hundred forty-one thousand, eight hundred nine".