50512405 has 4 divisors (see below), whose sum is σ = 60614892. Its totient is φ = 40409920.

The previous prime is 50512381. The next prime is 50512409. The reversal of 50512405 is 50421505.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 25492401 + 25020004 = 5049^2 + 5002^2 .

It is not a de Polignac number, because 50512405 - 2⁹ = 50511893 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50512409) 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, 5051236 + ... + 5051245.

It is an arithmetic number, because the mean of its divisors is an integer number (15153723).

Almost surely, 2^50512405 is an apocalyptic number.

It is an amenable number.

50512405 is a deficient number, since it is larger than the sum of its proper divisors (10102487).

50512405 is a wasteful number, since it uses less digits than its factorization.

50512405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10102486.

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 50512405 is about 7107.2079609366. The cubic root of 50512405 is about 369.6573526131.

The spelling of 50512405 in words is "fifty million, five hundred twelve thousand, four hundred five".