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4151281 = 171132161
BaseRepresentation
bin1111110101011111110001
321210220111011
433311133301
52030320111
6224550521
750166601
oct17653761
97726434
104151281
112385a12
121482441
13b246a4
147a0c01
15570021
hex3f57f1

4151281 has 8 divisors (see below), whose sum is σ = 4436424. Its totient is φ = 3870720.

The previous prime is 4151269. The next prime is 4151297. The reversal of 4151281 is 1821514.

It can be written as a sum of positive squares in 4 ways, for example, as 313600 + 3837681 = 560^2 + 1959^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a 3-Lehmer number, since φ(4151281) divides (4151281-1)3.

It is a cyclic number.

It is not a de Polignac number, because 4151281 - 27 = 4151153 is a prime.

It is a super-2 number, since 2×41512812 = 34466267881922, which contains 22 as substring.

It is a deceptive number, since it divides R4151280.

It is a Duffinian number.

4151281 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4151261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 841 + ... + 3001.

It is an arithmetic number, because the mean of its divisors is an integer number (554553).

Almost surely, 24151281 is an apocalyptic number.

It is an amenable number.

4151281 is a deficient number, since it is larger than the sum of its proper divisors (285143).

4151281 is a wasteful number, since it uses less digits than its factorization.

4151281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2291.

The product of its digits is 320, while the sum is 22.

The square root of 4151281 is about 2037.4692635718. The cubic root of 4151281 is about 160.7165905090.

Adding to 4151281 its reverse (1821514), we get a palindrome (5972795).

The spelling of 4151281 in words is "four million, one hundred fifty-one thousand, two hundred eighty-one".

Divisors: 1 17 113 1921 2161 36737 244193 4151281