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252211573 = 379776977
BaseRepresentation
bin11110000100001…
…11000101110101
3122120120200020101
433002013011311
51004031232243
641005434101
76151522465
oct1702070565
9576520211
10252211573
1111a404319
127056b931
1340338223
14256d3ba5
151721e54d
hexf087175

252211573 has 8 divisors (see below), whose sum is σ = 259330392. Its totient is φ = 245108736.

The previous prime is 252211571. The next prime is 252211591. The reversal of 252211573 is 375112252.

252211573 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 110292004 + 141919569 = 10502^2 + 11913^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 252211573 - 21 = 252211571 is a prime.

It is a super-2 number, since 2×2522115732 = 127221355110268658, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252211571) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32661 + ... + 39637.

It is an arithmetic number, because the mean of its divisors is an integer number (32416299).

Almost surely, 2252211573 is an apocalyptic number.

It is an amenable number.

252211573 is a deficient number, since it is larger than the sum of its proper divisors (7118819).

252211573 is an equidigital number, since it uses as much as digits as its factorization.

252211573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7991.

The product of its digits is 4200, while the sum is 28.

The square root of 252211573 is about 15881.1703913786. The cubic root of 252211573 is about 631.8126789890.

The spelling of 252211573 in words is "two hundred fifty-two million, two hundred eleven thousand, five hundred seventy-three".

Divisors: 1 37 977 6977 36149 258149 6816529 252211573