551055000 has 160 divisors (see below), whose sum is σ = 1823603760. Its totient is φ = 138240000.

The previous prime is 551054993. The next prime is 551055007. The reversal of 551055000 is 550155.

It is an interprime number because it is at equal distance from previous prime (551054993) and next prime (551055007).

It is a super-2 number, since 2×551055000² = 607323226050000000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551055007) by changing a digit.

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 39 ways as a sum of consecutive naturals, for example, 253920 + ... + 256080.

Almost surely, 2^551055000 is an apocalyptic number.

551055000 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 551055000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (911801880).

551055000 is an abundant number, since it is smaller than the sum of its proper divisors (1272548760).

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

551055000 is a wasteful number, since it uses less digits than its factorization.

551055000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2207 (or 2188 counting only the distinct ones).

The product of its (nonzero) digits is 625, while the sum is 21.

The square root of 551055000 is about 23474.5606987650. The cubic root of 551055000 is about 819.8448050533.

The spelling of 551055000 in words is "five hundred fifty-one million, fifty-five thousand".