50172012 has 144 divisors (see below), whose sum is σ = 147323904. Its totient is φ = 14256000.

The previous prime is 50172011. The next prime is 50172029. The reversal of 50172012 is 21027105.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (50172011) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 748803 + ... + 748869.

Almost surely, 2^50172012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 50172012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73661952).

50172012 is an abundant number, since it is smaller than the sum of its proper divisors (97151892).

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

50172012 is a wasteful number, since it uses less digits than its factorization.

50172012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180 (or 175 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 18.

The square root of 50172012 is about 7083.2204540025. The cubic root of 50172012 is about 368.8251314115.

Adding to 50172012 its reverse (21027105), we get a palindrome (71199117).

The spelling of 50172012 in words is "fifty million, one hundred seventy-two thousand, twelve".