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561052525 = 52112040191
BaseRepresentation
bin100001011100001…
…111101101101101
31110002201102101011
4201130033231231
52122112140100
6131401145221
716621603435
oct4134175555
91402642334
10561052525
11268777080
12137a8b211
138c310157
14547292c5
15343c7bba
hex2170fb6d

561052525 has 12 divisors (see below), whose sum is σ = 758951424. Its totient is φ = 408038000.

The previous prime is 561052469. The next prime is 561052537. The reversal of 561052525 is 525250165.

It is not a de Polignac number, because 561052525 - 221 = 558955373 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1019821 + ... + 1020370.

It is an arithmetic number, because the mean of its divisors is an integer number (63245952).

Almost surely, 2561052525 is an apocalyptic number.

561052525 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

561052525 is a deficient number, since it is larger than the sum of its proper divisors (197898899).

561052525 is a wasteful number, since it uses less digits than its factorization.

561052525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2040212 (or 2040207 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 31.

The square root of 561052525 is about 23686.5473423207. The cubic root of 561052525 is about 824.7731362745.

The spelling of 561052525 in words is "five hundred sixty-one million, fifty-two thousand, five hundred twenty-five".

Divisors: 1 5 11 25 55 275 2040191 10200955 22442101 51004775 112210505 561052525