50000555438 has 4 divisors (see below), whose sum is σ = 75000833160. Its totient is φ = 25000277718.

The previous prime is 50000555387. The next prime is 50000555489. The reversal of 50000555438 is 83455500005.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 83455500005 = 5 ⋅16691100001.

It is an interprime number because it is at equal distance from previous prime (50000555387) and next prime (50000555489).

It is a super-2 number, since 2×50000555438² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 50000555398 and 50000555407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12500138858 + ... + 12500138861.

It is an arithmetic number, because the mean of its divisors is an integer number (18750208290).

Almost surely, 2^50000555438 is an apocalyptic number.

50000555438 is a deficient number, since it is larger than the sum of its proper divisors (25000277722).

50000555438 is a wasteful number, since it uses less digits than its factorization.

50000555438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25000277721.

The product of its (nonzero) digits is 60000, while the sum is 35.

The spelling of 50000555438 in words is "fifty billion, five hundred fifty-five thousand, four hundred thirty-eight".