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552800081 = 1393976979
BaseRepresentation
bin100000111100110…
…000111101010001
31102112012011011002
4200330300331101
52113004100311
6130504231345
716461503021
oct4074607521
91375164132
10552800081
1126404a979
1213516b555
138a6b0b52
14535bba81
15337e793b
hex20f30f51

552800081 has 4 divisors (see below), whose sum is σ = 556777200. Its totient is φ = 548822964.

The previous prime is 552800077. The next prime is 552800099. The reversal of 552800081 is 180008255.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 552800081 - 22 = 552800077 is a prime.

It is a super-2 number, since 2×5528000812 = 611175859107213122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (552800011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1988351 + ... + 1988628.

It is an arithmetic number, because the mean of its divisors is an integer number (139194300).

Almost surely, 2552800081 is an apocalyptic number.

It is an amenable number.

552800081 is a deficient number, since it is larger than the sum of its proper divisors (3977119).

552800081 is a wasteful number, since it uses less digits than its factorization.

552800081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3977118.

The product of its (nonzero) digits is 3200, while the sum is 29.

The square root of 552800081 is about 23511.7009380436. The cubic root of 552800081 is about 820.7093213002.

The spelling of 552800081 in words is "five hundred fifty-two million, eight hundred thousand, eighty-one".

Divisors: 1 139 3976979 552800081