550439604 has 192 divisors, whose sum is σ = 1735776000. Its totient is φ = 148538880.

The previous prime is 550439579. The next prime is 550439621. The reversal of 550439604 is 406934055.

It is a happy number.

550439604 is a `hidden beast` number, since 5 + 5 + 0 + 43 + 9 + 604 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 447262 + ... + 448490.

It is an arithmetic number, because the mean of its divisors is an integer number (9040500).

Almost surely, 2^550439604 is an apocalyptic number.

550439604 is a gapful number since it is divisible by the number (54) 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 550439604, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (867888000).

550439604 is an abundant number, since it is smaller than the sum of its proper divisors (1185336396).

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

550439604 is a wasteful number, since it uses less digits than its factorization.

550439604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1295 (or 1287 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The square root of 550439604 is about 23461.4493158458. The cubic root of 550439604 is about 819.5395015035.

The spelling of 550439604 in words is "five hundred fifty million, four hundred thirty-nine thousand, six hundred four".