50438913 has 16 divisors (see below), whose sum is σ = 77116416. Its totient is φ = 28725840.

The previous prime is 50438903. The next prime is 50438951. The reversal of 50438913 is 31983405.

It is not a de Polignac number, because 50438913 - 2¹² = 50434817 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (50438903) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2670 + ... + 10392.

It is an arithmetic number, because the mean of its divisors is an integer number (4819776).

Almost surely, 2^50438913 is an apocalyptic number.

It is an amenable number.

50438913 is a deficient number, since it is larger than the sum of its proper divisors (26677503).

50438913 is a wasteful number, since it uses less digits than its factorization.

50438913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8044.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 50438913 is about 7102.0358348857. The cubic root of 50438913 is about 369.4779904405.

The spelling of 50438913 in words is "fifty million, four hundred thirty-eight thousand, nine hundred thirteen".