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252666141 = 3713925517
BaseRepresentation
bin11110000111101…
…10000100011101
3122121102202210020
433003312010131
51004140304031
641023302353
76155424660
oct1703660435
9577382706
10252666141
1111a6948a2
127074a9b9
13404670c0
14257b16d7
15172ae096
hexf0f611d

252666141 has 16 divisors (see below), whose sum is σ = 414632064. Its totient is φ = 133274304.

The previous prime is 252666133. The next prime is 252666181. The reversal of 252666141 is 141666252.

It is not a de Polignac number, because 252666141 - 23 = 252666133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252666181) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 462486 + ... + 463031.

It is an arithmetic number, because the mean of its divisors is an integer number (25914504).

Almost surely, 2252666141 is an apocalyptic number.

252666141 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

252666141 is a deficient number, since it is larger than the sum of its proper divisors (161965923).

252666141 is a wasteful number, since it uses less digits than its factorization.

252666141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 925540.

The product of its digits is 17280, while the sum is 33.

The square root of 252666141 is about 15895.4754883269. The cubic root of 252666141 is about 632.1920290865.

The spelling of 252666141 in words is "two hundred fifty-two million, six hundred sixty-six thousand, one hundred forty-one".

Divisors: 1 3 7 13 21 39 91 273 925517 2776551 6478619 12031721 19435857 36095163 84222047 252666141