51461405 has 8 divisors (see below), whose sum is σ = 65004000. Its totient is φ = 39002256.

The previous prime is 51461401. The next prime is 51461429. The reversal of 51461405 is 50416415.

51461405 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 51461405 - 2² = 51461401 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51461401) 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, 270755 + ... + 270944.

It is an arithmetic number, because the mean of its divisors is an integer number (8125500).

Almost surely, 2^51461405 is an apocalyptic number.

It is an amenable number.

51461405 is a deficient number, since it is larger than the sum of its proper divisors (13542595).

51461405 is a wasteful number, since it uses less digits than its factorization.

51461405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541723.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 51461405 is about 7173.6605021425. The cubic root of 51461405 is about 371.9579793172.

The spelling of 51461405 in words is "fifty-one million, four hundred sixty-one thousand, four hundred five".