50138519 has 4 divisors (see below), whose sum is σ = 51205344. Its totient is φ = 49071696.

The previous prime is 50138513. The next prime is 50138527. The reversal of 50138519 is 91583105.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91583105 = 5 ⋅18316621.

It is a cyclic number.

It is not a de Polignac number, because 50138519 - 2¹² = 50134423 is a prime.

It is a super-2 number, since 2×50138519² = 5027742175026722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50138513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 533342 + ... + 533435.

It is an arithmetic number, because the mean of its divisors is an integer number (12801336).

Almost surely, 2^50138519 is an apocalyptic number.

50138519 is a deficient number, since it is larger than the sum of its proper divisors (1066825).

50138519 is a wasteful number, since it uses less digits than its factorization.

50138519 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1066824.

The product of its (nonzero) digits is 5400, while the sum is 32.

The square root of 50138519 is about 7080.8558098580. The cubic root of 50138519 is about 368.7430417532.

The spelling of 50138519 in words is "fifty million, one hundred thirty-eight thousand, five hundred nineteen".