50731906 has 8 divisors (see below), whose sum is σ = 76169340. Its totient is φ = 25342128.

The previous prime is 50731897. The next prime is 50731909. The reversal of 50731906 is 60913705.

It can be written as a sum of positive squares in 2 ways, for example, as 32319225 + 18412681 = 5685^2 + 4291^2 .

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

It is not an unprimeable number, because it can be changed into a prime (50731909) 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, 9121 + ... + 13588.

Almost surely, 2^50731906 is an apocalyptic number.

50731906 is a deficient number, since it is larger than the sum of its proper divisors (25437434).

50731906 is a wasteful number, since it uses less digits than its factorization.

50731906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23828.

The product of its (nonzero) digits is 5670, while the sum is 31.

The square root of 50731906 is about 7122.6333613348. The cubic root of 50731906 is about 370.1920259625.

The spelling of 50731906 in words is "fifty million, seven hundred thirty-one thousand, nine hundred six".