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5201281 = 7965839
BaseRepresentation
bin10011110101110110000001
3100210020211001
4103311312001
52312420111
6303252001
762132041
oct23656601
910706731
105201281
112a32888
1218aa001
1311015a7
14995721
156cb1c1
hex4f5d81

5201281 has 4 divisors (see below), whose sum is σ = 5267200. Its totient is φ = 5135364.

The previous prime is 5201267. The next prime is 5201291. The reversal of 5201281 is 1821025.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5201281 - 217 = 5070209 is a prime.

It is a super-2 number, since 2×52012812 = 54106648081922, which contains 22 as substring.

It is a Duffinian number.

5201281 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (5201291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32841 + ... + 32998.

It is an arithmetic number, because the mean of its divisors is an integer number (1316800).

Almost surely, 25201281 is an apocalyptic number.

It is an amenable number.

5201281 is a deficient number, since it is larger than the sum of its proper divisors (65919).

5201281 is an equidigital number, since it uses as much as digits as its factorization.

5201281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65918.

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 5201281 is about 2280.6317107328. The cubic root of 5201281 is about 173.2620462116.

The spelling of 5201281 in words is "five million, two hundred one thousand, two hundred eighty-one".

Divisors: 1 79 65839 5201281