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2255281 = 71931547
BaseRepresentation
bin1000100110100110110001
311020120122221
420212212301
51034132111
6120201041
725112110
oct10464661
94216587
102255281
111300476
12909181
1360c6b2
14429c77
152e8371
hex2269b1

2255281 has 16 divisors (see below), whose sum is σ = 2805760. Its totient is φ = 1769040.

The previous prime is 2255269. The next prime is 2255291. The reversal of 2255281 is 1825522.

It is not a de Polignac number, because 2255281 - 25 = 2255249 is a prime.

It is a super-2 number, since 2×22552812 = 10172584777922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2255251) 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, 3850 + ... + 4396.

It is an arithmetic number, because the mean of its divisors is an integer number (175360).

22255281 is an apocalyptic number.

It is an amenable number.

2255281 is a deficient number, since it is larger than the sum of its proper divisors (550479).

2255281 is a wasteful number, since it uses less digits than its factorization.

2255281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 604.

The product of its digits is 1600, while the sum is 25.

The square root of 2255281 is about 1501.7593016193. The cubic root of 2255281 is about 131.1395091274.

The spelling of 2255281 in words is "two million, two hundred fifty-five thousand, two hundred eighty-one".

Divisors: 1 7 19 31 133 217 547 589 3829 4123 10393 16957 72751 118699 322183 2255281