50172002120 has 16 divisors (see below), whose sum is σ = 112887004860. Its totient is φ = 20068800832.

The previous prime is 50172002117. The next prime is 50172002159. The reversal of 50172002120 is 2120027105.

It can be written as a sum of positive squares in 2 ways, for example, as 49931690116 + 240312004 = 223454^2 + 15502^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 50172002092 and 50172002101.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 627149987 + ... + 627150066.

Almost surely, 2^50172002120 is an apocalyptic number.

It is an amenable number.

50172002120 is an abundant number, since it is smaller than the sum of its proper divisors (62715002740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

50172002120 is a wasteful number, since it uses less digits than its factorization.

50172002120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1254300064 (or 1254300060 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 20.

Adding to 50172002120 its reverse (2120027105), we get a palindrome (52292029225).

The spelling of 50172002120 in words is "fifty billion, one hundred seventy-two million, two thousand, one hundred twenty".