550472138 has 8 divisors (see below), whose sum is σ = 874279332. Its totient is φ = 259045696.

The previous prime is 550472137. The next prime is 550472149. The reversal of 550472138 is 831274055.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 546484129 + 3988009 = 23377^2 + 1997^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 550472098 and 550472107.

It is not an unprimeable number, because it can be changed into a prime (550472137) 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, 8095145 + ... + 8095212.

Almost surely, 2^550472138 is an apocalyptic number.

550472138 is a deficient number, since it is larger than the sum of its proper divisors (323807194).

550472138 is a wasteful number, since it uses less digits than its factorization.

550472138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16190376.

The product of its (nonzero) digits is 33600, while the sum is 35.

The square root of 550472138 is about 23462.1426557763. The cubic root of 550472138 is about 819.5556476121. Note that the first 3 decimals are identical.

The spelling of 550472138 in words is "five hundred fifty million, four hundred seventy-two thousand, one hundred thirty-eight".