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252805054 = 21039291321
BaseRepresentation
bin11110001000101…
…11111110111110
3122121200211100011
433010113332332
51004204230204
641030253434
76156543655
oct1704277676
9577624304
10252805054
1111a77a1a7
12707b727a
13404b53b8
142580a19c
15172da304
hexf117fbe

252805054 has 16 divisors (see below), whose sum is σ = 383591520. Its totient is φ = 124945920.

The previous prime is 252805043. The next prime is 252805061. The reversal of 252805054 is 450508252.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 190714 + ... + 192034.

It is an arithmetic number, because the mean of its divisors is an integer number (23974470).

Almost surely, 2252805054 is an apocalyptic number.

252805054 is a deficient number, since it is larger than the sum of its proper divisors (130786466).

252805054 is a wasteful number, since it uses less digits than its factorization.

252805054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2355.

The product of its (nonzero) digits is 16000, while the sum is 31.

The square root of 252805054 is about 15899.8444646481. The cubic root of 252805054 is about 632.3078652143.

The spelling of 252805054 in words is "two hundred fifty-two million, eight hundred five thousand, fifty-four".

Divisors: 1 2 103 206 929 1321 1858 2642 95687 136063 191374 272126 1227209 2454418 126402527 252805054