551923400 has 96 divisors (see below), whose sum is σ = 1543800000. Its totient is φ = 179262720.

The previous prime is 551923373. The next prime is 551923429. The reversal of 551923400 is 4329155.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16226 + ... + 36974.

It is an arithmetic number, because the mean of its divisors is an integer number (16081250).

Almost surely, 2^551923400 is an apocalyptic number.

551923400 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 551923400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (771900000).

551923400 is an abundant number, since it is smaller than the sum of its proper divisors (991876600).

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

551923400 is a wasteful number, since it uses less digits than its factorization.

551923400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20791 (or 20782 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 551923400 is about 23493.0500361277. The cubic root of 551923400 is about 820.2752397467.

The spelling of 551923400 in words is "five hundred fifty-one million, nine hundred twenty-three thousand, four hundred".