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551005252 = 227472931429
BaseRepresentation
bin100000110101111…
…010110001000100
31102101210222002221
4200311322301010
52112024132002
6130401542124
716440316210
oct4065726104
91371728087
10551005252
11263034446
12134644944
138a202c15
1453271940
1533590c37
hex20d7ac44

551005252 has 48 divisors (see below), whose sum is σ = 1130088960. Its totient is φ = 230170752.

The previous prime is 551005237. The next prime is 551005283. The reversal of 551005252 is 252500155.

It is a happy 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 15 ways as a sum of consecutive naturals, for example, 384874 + ... + 386302.

It is an arithmetic number, because the mean of its divisors is an integer number (23543520).

Almost surely, 2551005252 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 551005252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (565044480).

551005252 is an abundant number, since it is smaller than the sum of its proper divisors (579083708).

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

551005252 is a wasteful number, since it uses less digits than its factorization.

551005252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1780 (or 1778 counting only the distinct ones).

The product of its (nonzero) digits is 2500, while the sum is 25.

The square root of 551005252 is about 23473.5010597056. The cubic root of 551005252 is about 819.8201330654.

The spelling of 551005252 in words is "five hundred fifty-one million, five thousand, two hundred fifty-two".