51411909 has 8 divisors (see below), whose sum is σ = 70221312. Its totient is φ = 33438560.

The previous prime is 51411901. The next prime is 51411917. The reversal of 51411909 is 90911415.

51411909 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (51411901) and next prime (51411917).

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 51411909 - 2³ = 51411901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51411901) 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, 208869 + ... + 209114.

It is an arithmetic number, because the mean of its divisors is an integer number (8777664).

Almost surely, 2^51411909 is an apocalyptic number.

It is an amenable number.

51411909 is a deficient number, since it is larger than the sum of its proper divisors (18809403).

51411909 is a wasteful number, since it uses less digits than its factorization.

51411909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418027.

The product of its (nonzero) digits is 1620, while the sum is 30.

The square root of 51411909 is about 7170.2098295657. The cubic root of 51411909 is about 371.8386903230.

The spelling of 51411909 in words is "fifty-one million, four hundred eleven thousand, nine hundred nine".