550253440 has 128 divisors (see below), whose sum is σ = 1466449920. Its totient is φ = 195717120.

The previous prime is 550253423. The next prime is 550253461. The reversal of 550253440 is 44352055.

It is a tau number, because it is divible by the number of its divisors (128).

It is a junction number, because it is equal to n+sod(n) for n = 550253399 and 550253408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 330049 + ... + 331711.

It is an arithmetic number, because the mean of its divisors is an integer number (11456640).

Almost surely, 2^550253440 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 550253440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (733224960).

550253440 is an abundant number, since it is smaller than the sum of its proper divisors (916196480).

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

550253440 is a wasteful number, since it uses less digits than its factorization.

550253440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1740 (or 1728 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 28.

The square root of 550253440 is about 23457.4815357489. The cubic root of 550253440 is about 819.4470990225.

The spelling of 550253440 in words is "five hundred fifty million, two hundred fifty-three thousand, four hundred forty".