552821000 has 32 divisors (see below), whose sum is σ = 1293603480. Its totient is φ = 221128000.

The previous prime is 552820987. The next prime is 552821023. The reversal of 552821000 is 128255.

It can be written as a sum of positive squares in 4 ways, for example, as 108201604 + 444619396 = 10402^2 + 21086^2 .

It is a super-2 number, since 2×552821000² = 611222116082000000, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 275411 + ... + 277410.

Almost surely, 2^552821000 is an apocalyptic number.

552821000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

552821000 is an abundant number, since it is smaller than the sum of its proper divisors (740782480).

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

552821000 is a wasteful number, since it uses less digits than its factorization.

552821000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552842 (or 552828 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 552821000 is about 23512.1457974384. The cubic root of 552821000 is about 820.7196735670.

Adding to 552821000 its reverse (128255), we get a palindrome (552949255).

The spelling of 552821000 in words is "five hundred fifty-two million, eight hundred twenty-one thousand".