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252972775 = 5211919901
BaseRepresentation
bin11110001010000…
…00111011100111
3122122000100102001
433011000323213
51004230112100
641034030131
76161142646
oct1705007347
9578010361
10252972775
1111a884210
1270878347
1340543843
142585135d
151731ed6a
hexf140ee7

252972775 has 12 divisors (see below), whose sum is σ = 342203544. Its totient is φ = 183980000.

The previous prime is 252972751. The next prime is 252972793. The reversal of 252972775 is 577279252.

It is not a de Polignac number, because 252972775 - 217 = 252841703 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 459676 + ... + 460225.

It is an arithmetic number, because the mean of its divisors is an integer number (28516962).

Almost surely, 2252972775 is an apocalyptic number.

252972775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

252972775 is a deficient number, since it is larger than the sum of its proper divisors (89230769).

252972775 is a wasteful number, since it uses less digits than its factorization.

252972775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 919922 (or 919917 counting only the distinct ones).

The product of its digits is 617400, while the sum is 46.

The square root of 252972775 is about 15905.1178870199. The cubic root of 252972775 is about 632.4476670913.

The spelling of 252972775 in words is "two hundred fifty-two million, nine hundred seventy-two thousand, seven hundred seventy-five".

Divisors: 1 5 11 25 55 275 919901 4599505 10118911 22997525 50594555 252972775