50649905 has 8 divisors (see below), whose sum is σ = 60820584. Its totient is φ = 40492800.

The previous prime is 50649881. The next prime is 50649961. The reversal of 50649905 is 50994605.

It can be written as a sum of positive squares in 4 ways, for example, as 5276209 + 45373696 = 2297^2 + 6736^2 .

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

It is not a de Polignac number, because 50649905 - 2¹⁴ = 50633521 is a prime.

It is a Duffinian number.

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, 8825 + ... + 13385.

It is an arithmetic number, because the mean of its divisors is an integer number (7602573).

Almost surely, 2^50649905 is an apocalyptic number.

It is an amenable number.

50649905 is a deficient number, since it is larger than the sum of its proper divisors (10170679).

50649905 is a wasteful number, since it uses less digits than its factorization.

50649905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6787.

The product of its (nonzero) digits is 48600, while the sum is 38.

The square root of 50649905 is about 7116.8746651884. The cubic root of 50649905 is about 369.9924639322.

The spelling of 50649905 in words is "fifty million, six hundred forty-nine thousand, nine hundred five".