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252873257 = 7132778827
BaseRepresentation
bin11110001001010…
…00101000101001
3122121211021220012
433010220220221
51004213421012
641031541305
76160246550
oct1704505051
9577737805
10252873257
1111a81646a
127082a835
134050a460
1425826d97
1517300622
hexf128a29

252873257 has 8 divisors (see below), whose sum is σ = 311228736. Its totient is φ = 200075472.

The previous prime is 252873227. The next prime is 252873259. The reversal of 252873257 is 752378252.

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 252873257 - 26 = 252873193 is a prime.

It is a super-3 number, since 3×2528732573 (a number of 26 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (252873259) 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, 1389323 + ... + 1389504.

It is an arithmetic number, because the mean of its divisors is an integer number (38903592).

Almost surely, 2252873257 is an apocalyptic number.

It is an amenable number.

252873257 is a deficient number, since it is larger than the sum of its proper divisors (58355479).

252873257 is a wasteful number, since it uses less digits than its factorization.

252873257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2778847.

The product of its digits is 235200, while the sum is 41.

The square root of 252873257 is about 15901.9890894190. The cubic root of 252873257 is about 632.3647224844.

The spelling of 252873257 in words is "two hundred fifty-two million, eight hundred seventy-three thousand, two hundred fifty-seven".

Divisors: 1 7 13 91 2778827 19451789 36124751 252873257