51065405 has 8 divisors (see below), whose sum is σ = 63942912. Its totient is φ = 39076048.

The previous prime is 51065393. The next prime is 51065411. The reversal of 51065405 is 50456015.

51065405 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 51065405 - 2⁴ = 51065389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 221909 + ... + 222138.

It is an arithmetic number, because the mean of its divisors is an integer number (7992864).

Almost surely, 2^51065405 is an apocalyptic number.

It is an amenable number.

51065405 is a deficient number, since it is larger than the sum of its proper divisors (12877507).

51065405 is a wasteful number, since it uses less digits than its factorization.

51065405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444075.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 51065405 is about 7146.0062272573. The cubic root of 51065405 is about 371.0014385193.

The spelling of 51065405 in words is "fifty-one million, sixty-five thousand, four hundred five".