550859400 has 768 divisors, whose sum is σ = 2499840000. Its totient is φ = 108241920.

The previous prime is 550859383. The next prime is 550859417. The reversal of 550859400 is 4958055.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (550859383) and next prime (550859417).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 9336571 + ... + 9336629.

It is an arithmetic number, because the mean of its divisors is an integer number (3255000).

Almost surely, 2^550859400 is an apocalyptic number.

550859400 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 550859400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1249920000).

550859400 is an abundant number, since it is smaller than the sum of its proper divisors (1948980600).

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

550859400 is a wasteful number, since it uses less digits than its factorization.

550859400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123 (or 108 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 36.

The square root of 550859400 is about 23470.3941168443. The cubic root of 550859400 is about 819.7477907677.

The spelling of 550859400 in words is "five hundred fifty million, eight hundred fifty-nine thousand, four hundred".