550502400 has 252 divisors, whose sum is σ = 2080373792. Its totient is φ = 125829120.

The previous prime is 550502387. The next prime is 550502423. The reversal of 550502400 is 4205055.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 78643197 + ... + 78643203.

Almost surely, 2^550502400 is an apocalyptic number.

550502400 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 550502400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1040186896).

550502400 is an abundant number, since it is smaller than the sum of its proper divisors (1529871392).

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

550502400 is an frugal number, since it uses more digits than its factorization.

550502400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60 (or 17 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 21.

The square root of 550502400 is about 23462.7875581739. The cubic root of 550502400 is about 819.5706655920.

Multiplying 550502400 by its sum of digits (21), we get a square (11560550400 = 107520²).

550502400 divided by its sum of digits (21) gives a square (26214400 = 5120²).

Adding to 550502400 its reverse (4205055), we get a palindrome (554707455).

The spelling of 550502400 in words is "five hundred fifty million, five hundred two thousand, four hundred".