50489172 has 18 divisors (see below), whose sum is σ = 127625498. Its totient is φ = 16829712.

The previous prime is 50489171. The next prime is 50489227. The reversal of 50489172 is 27198405.

50489172 is a `hidden beast` number, since 5 + 0 + 489 + 172 = 666.

It can be written as a sum of positive squares in only one way, i.e., 41525136 + 8964036 = 6444^2 + 2994^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1402477 = 50489172 / (5 + 0 + 4 + 8 + 9 + 1 + 7 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50489171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 701203 + ... + 701274.

Almost surely, 2^50489172 is an apocalyptic number.

It is an amenable number.

50489172 is an abundant number, since it is smaller than the sum of its proper divisors (77136326).

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

50489172 is a wasteful number, since it uses less digits than its factorization.

50489172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1402487 (or 1402482 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 50489172 is about 7105.5733055117. The cubic root of 50489172 is about 369.6006697295.

It can be divided in two parts, 504 and 89172, that added together give a triangular number (89676 = T₄₂₃).

The spelling of 50489172 in words is "fifty million, four hundred eighty-nine thousand, one hundred seventy-two".