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2257143899 = 6169153549
BaseRepresentation
bin1000011010001001…
…0100100001011011
312211022012210100012
42012202110201123
514110312101044
61011550232135
7106635256313
oct20642244133
95738183305
102257143899
11a5910a68a
1252bab564b
1329c81b60a
14175ab4443
15d325859e
hex8689485b

2257143899 has 8 divisors (see below), whose sum is σ = 2297509200. Its totient is φ = 2216887200.

The previous prime is 2257143887. The next prime is 2257143937. The reversal of 2257143899 is 9983417522.

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 2257143899 - 28 = 2257143643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2257143809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15377 + ... + 68925.

It is an arithmetic number, because the mean of its divisors is an integer number (287188650).

Almost surely, 22257143899 is an apocalyptic number.

2257143899 is a deficient number, since it is larger than the sum of its proper divisors (40365301).

2257143899 is an equidigital number, since it uses as much as digits as its factorization.

2257143899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54301.

The product of its digits is 1088640, while the sum is 50.

The square root of 2257143899 is about 47509.4085313636. The cubic root of 2257143899 is about 1311.7560698336.

The spelling of 2257143899 in words is "two billion, two hundred fifty-seven million, one hundred forty-three thousand, eight hundred ninety-nine".

Divisors: 1 61 691 42151 53549 3266489 37002359 2257143899