51341209 has 4 divisors (see below), whose sum is σ = 51404416. Its totient is φ = 51278004.

The previous prime is 51341167. The next prime is 51341219. The reversal of 51341209 is 90214315.

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.

It is a cyclic number.

It is not a de Polignac number, because 51341209 - 2¹¹ = 51339161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51341219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30369 + ... + 32014.

It is an arithmetic number, because the mean of its divisors is an integer number (12851104).

Almost surely, 2^51341209 is an apocalyptic number.

It is an amenable number.

51341209 is a deficient number, since it is larger than the sum of its proper divisors (63207).

51341209 is an equidigital number, since it uses as much as digits as its factorization.

51341209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63206.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 51341209 is about 7165.2780127501. The cubic root of 51341209 is about 371.6681652720.

The spelling of 51341209 in words is "fifty-one million, three hundred forty-one thousand, two hundred nine".