550215280 has 80 divisors (see below), whose sum is σ = 1330272000. Its totient is φ = 211415040.

The previous prime is 550215277. The next prime is 550215283. The reversal of 550215280 is 82512055.

550215280 = T₁ + T₂ + ... + T₁₄₈₈.

550215280 is a nontrivial binomial coefficient, being equal to C(1490, 3).

It is an interprime number because it is at equal distance from previous prime (550215277) and next prime (550215283).

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550215283) by changing a digit.

It is the 1488-th tetrahedral number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 368776 + ... + 370264.

It is an arithmetic number, because the mean of its divisors is an integer number (16628400).

Almost surely, 2^550215280 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 550215280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (665136000).

550215280 is an abundant number, since it is smaller than the sum of its proper divisors (780056720).

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

550215280 is a wasteful number, since it uses less digits than its factorization.

550215280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1682 (or 1676 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 28.

The square root of 550215280 is about 23456.6681350954. The cubic root of 550215280 is about 819.4281557370.

The spelling of 550215280 in words is "five hundred fifty million, two hundred fifteen thousand, two hundred eighty".