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252703261 = 870729023
BaseRepresentation
bin11110000111111…
…11001000011101
3122121111122201001
433003333020131
51004143001021
641024150301
76155641126
oct1703771035
9577448631
10252703261
1111a70a778
1270768391
134047ac75
14257c104d
15172ba091
hexf0ff21d

252703261 has 4 divisors (see below), whose sum is σ = 252740992. Its totient is φ = 252665532.

The previous prime is 252703259. The next prime is 252703273. The reversal of 252703261 is 162307252.

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 252703261 - 21 = 252703259 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 (252703961) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 5805 + ... + 23218.

It is an arithmetic number, because the mean of its divisors is an integer number (63185248).

Almost surely, 2252703261 is an apocalyptic number.

It is an amenable number.

252703261 is a deficient number, since it is larger than the sum of its proper divisors (37731).

252703261 is an equidigital number, since it uses as much as digits as its factorization.

252703261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37730.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 252703261 is about 15896.6430733032. The cubic root of 252703261 is about 632.2229866958. Note that the first 3 decimals are identical.

The spelling of 252703261 in words is "two hundred fifty-two million, seven hundred three thousand, two hundred sixty-one".

Divisors: 1 8707 29023 252703261