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2257141865 = 51124779379
BaseRepresentation
bin1000011010001001…
…0100000001101001
312211022012200112212
42012202110001221
514110312014430
61011550214505
7106635250346
oct20642240151
95738180485
102257141865
11a59109100
1252bab4435
1329c81a704
14175ab37cd
15d3257b95
hex86894069

2257141865 has 24 divisors (see below), whose sum is σ = 3040571520. Its totient is φ = 1606610720.

The previous prime is 2257141813. The next prime is 2257141871. The reversal of 2257141865 is 5681417522.

It is not a de Polignac number, because 2257141865 - 212 = 2257137769 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11255 + ... + 68124.

It is an arithmetic number, because the mean of its divisors is an integer number (126690480).

Almost surely, 22257141865 is an apocalyptic number.

It is an amenable number.

2257141865 is a deficient number, since it is larger than the sum of its proper divisors (783429655).

2257141865 is a wasteful number, since it uses less digits than its factorization.

2257141865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79453 (or 79442 counting only the distinct ones).

The product of its digits is 134400, while the sum is 41.

The square root of 2257141865 is about 47509.3871250725. The cubic root of 2257141865 is about 1311.7556758087.

The spelling of 2257141865 in words is "two billion, two hundred fifty-seven million, one hundred forty-one thousand, eight hundred sixty-five".

Divisors: 1 5 11 47 55 121 235 517 605 2585 5687 28435 79379 396895 873169 3730813 4365845 9604859 18654065 41038943 48024295 205194715 451428373 2257141865