50403665 has 8 divisors (see below), whose sum is σ = 65137128. Its totient is φ = 37221120.

The previous prime is 50403643. The next prime is 50403667. The reversal of 50403665 is 56630405.

It can be written as a sum of positive squares in 4 ways, for example, as 1067089 + 49336576 = 1033^2 + 7024^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 50403665 - 2⁶ = 50403601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50403667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 387656 + ... + 387785.

It is an arithmetic number, because the mean of its divisors is an integer number (8142141).

Almost surely, 2^50403665 is an apocalyptic number.

It is an amenable number.

50403665 is a deficient number, since it is larger than the sum of its proper divisors (14733463).

50403665 is a wasteful number, since it uses less digits than its factorization.

50403665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 775459.

The product of its (nonzero) digits is 10800, while the sum is 29.

The square root of 50403665 is about 7099.5538592224. The cubic root of 50403665 is about 369.3919035003.

The spelling of 50403665 in words is "fifty million, four hundred three thousand, six hundred sixty-five".