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252268901 = 1289195709
BaseRepresentation
bin11110000100101…
…01000101100101
3122120200120212122
433002111011211
51004040101101
641010555325
76152151563
oct1702250545
9576616778
10252268901
1111a4433a5
1270598b45
1340358351
142570aa33
151723151b
hexf095165

252268901 has 4 divisors (see below), whose sum is σ = 252465900. Its totient is φ = 252071904.

The previous prime is 252268897. The next prime is 252268921. The reversal of 252268901 is 109862252.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 162588001 + 89680900 = 12751^2 + 9470^2 .

It is a cyclic number.

It is not a de Polignac number, because 252268901 - 22 = 252268897 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252268921) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 96566 + ... + 99143.

It is an arithmetic number, because the mean of its divisors is an integer number (63116475).

Almost surely, 2252268901 is an apocalyptic number.

It is an amenable number.

252268901 is a deficient number, since it is larger than the sum of its proper divisors (196999).

252268901 is a wasteful number, since it uses less digits than its factorization.

252268901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196998.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 252268901 is about 15882.9751935839. The cubic root of 252268901 is about 631.8605459615.

The spelling of 252268901 in words is "two hundred fifty-two million, two hundred sixty-eight thousand, nine hundred one".

Divisors: 1 1289 195709 252268901