51404305 has 8 divisors (see below), whose sum is σ = 61727400. Its totient is φ = 41095296.

The previous prime is 51404299. The next prime is 51404321. The reversal of 51404305 is 50340415.

It can be written as a sum of positive squares in 4 ways, for example, as 38416 + 51365889 = 196^2 + 7167^2 .

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 51404305 - 2¹⁹ = 50880017 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7861 + ... + 12829.

It is an arithmetic number, because the mean of its divisors is an integer number (7715925).

Almost surely, 2^51404305 is an apocalyptic number.

It is an amenable number.

51404305 is a deficient number, since it is larger than the sum of its proper divisors (10323095).

51404305 is a wasteful number, since it uses less digits than its factorization.

51404305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7043.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 51404305 is about 7169.6795604825. The cubic root of 51404305 is about 371.8203573410.

The spelling of 51404305 in words is "fifty-one million, four hundred four thousand, three hundred five".