550401500 has 192 divisors, whose sum is σ = 1446681600. Its totient is φ = 180576000.

The previous prime is 550401487. The next prime is 550401517. The reversal of 550401500 is 5104055.

It is a super-2 number, since 2×550401500² = 605883622404500000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2403386 + ... + 2403614.

It is an arithmetic number, because the mean of its divisors is an integer number (7534800).

Almost surely, 2^550401500 is an apocalyptic number.

550401500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 550401500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (723340800).

550401500 is an abundant number, since it is smaller than the sum of its proper divisors (896280100).

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

550401500 is a wasteful number, since it uses less digits than its factorization.

550401500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301 (or 289 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 20.

The square root of 550401500 is about 23460.6372462472. The cubic root of 550401500 is about 819.5205902832.

Adding to 550401500 its reverse (5104055), we get a palindrome (555505555).

The spelling of 550401500 in words is "five hundred fifty million, four hundred one thousand, five hundred".