50438405 has 24 divisors (see below), whose sum is σ = 65873736. Its totient is φ = 36945920.

The previous prime is 50438387. The next prime is 50438413. The reversal of 50438405 is 50483405.

It is a Cunningham number, because it is equal to 7102²+1.

It can be written as a sum of positive squares in 12 ways, for example, as 32273761 + 18164644 = 5681^2 + 4262^2 .

It is not a de Polignac number, because 50438405 - 2¹² = 50434309 is a prime.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 142709 + ... + 143061.

It is an arithmetic number, because the mean of its divisors is an integer number (2744739).

Almost surely, 2^50438405 is an apocalyptic number.

It is an amenable number.

50438405 is a deficient number, since it is larger than the sum of its proper divisors (15435331).

50438405 is a wasteful number, since it uses less digits than its factorization.

50438405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457 (or 416 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 50438405 is about 7102.0000704027. Note that the first 4 decimals coincide. The cubic root of 50438405 is about 369.4767500262.

The spelling of 50438405 in words is "fifty million, four hundred thirty-eight thousand, four hundred five".