50638442 has 4 divisors (see below), whose sum is σ = 75957666. Its totient is φ = 25319220.

The previous prime is 50638417. The next prime is 50638453. The reversal of 50638442 is 24483605.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24483605 = 5 ⋅4896721.

It can be written as a sum of positive squares in only one way, i.e., 42915601 + 7722841 = 6551^2 + 2779^2 .

It is a junction number, because it is equal to n+sod(n) for n = 50638399 and 50638408.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12659609 + ... + 12659612.

Almost surely, 2^50638442 is an apocalyptic number.

50638442 is a deficient number, since it is larger than the sum of its proper divisors (25319224).

50638442 is a wasteful number, since it uses less digits than its factorization.

50638442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25319223.

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 50638442 is about 7116.0692801574. The cubic root of 50638442 is about 369.9645498054.

The spelling of 50638442 in words is "fifty million, six hundred thirty-eight thousand, four hundred forty-two".