50638905 has 16 divisors (see below), whose sum is σ = 90024960. Its totient is φ = 27007344.

The previous prime is 50638891. The next prime is 50638919. The reversal of 50638905 is 50983605.

It is an interprime number because it is at equal distance from previous prime (50638891) and next prime (50638919).

It is not a de Polignac number, because 50638905 - 2⁵ = 50638873 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 50638905.

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, 187417 + ... + 187686.

It is an arithmetic number, because the mean of its divisors is an integer number (5626560).

Almost surely, 2^50638905 is an apocalyptic number.

It is an amenable number.

50638905 is a deficient number, since it is larger than the sum of its proper divisors (39386055).

50638905 is a wasteful number, since it uses less digits than its factorization.

50638905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375117 (or 375111 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 50638905 is about 7116.1018120879. The cubic root of 50638905 is about 369.9656773616.

The spelling of 50638905 in words is "fifty million, six hundred thirty-eight thousand, nine hundred five".