50019905 has 16 divisors (see below), whose sum is σ = 65741760. Its totient is φ = 36308928.

The previous prime is 50019887. The next prime is 50019911. The reversal of 50019905 is 50991005.

It is a cyclic number.

It is not a de Polignac number, because 50019905 - 2⁸ = 50019649 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2687 + ... + 10356.

It is an arithmetic number, because the mean of its divisors is an integer number (4108860).

Almost surely, 2^50019905 is an apocalyptic number.

It is an amenable number.

50019905 is a deficient number, since it is larger than the sum of its proper divisors (15721855).

50019905 is a wasteful number, since it uses less digits than its factorization.

50019905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13120.

The product of its (nonzero) digits is 2025, while the sum is 29.

The square root of 50019905 is about 7072.4751678603. The cubic root of 50019905 is about 368.4520304761.

The spelling of 50019905 in words is "fifty million, nineteen thousand, nine hundred five".