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4061 = 31131
BaseRepresentation
bin111111011101
312120102
4333131
5112221
630445
714561
oct7735
95512
104061
113062
122425
131b05
1416a1
15130b
hexfdd

4061 has 4 divisors (see below), whose sum is σ = 4224. Its totient is φ = 3900.

The previous prime is 4057. The next prime is 4073. The reversal of 4061 is 1604.

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 4061 - 22 = 4057 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a nialpdrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4001) 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, 35 + ... + 96.

It is an arithmetic number, because the mean of its divisors is an integer number (1056).

4061 is the 29-th centered decagonal number.

It is an amenable number.

4061 is a deficient number, since it is larger than the sum of its proper divisors (163).

4061 is a wasteful number, since it uses less digits than its factorization.

4061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 4061 is about 63.7259758654. The cubic root of 4061 is about 15.9542966579.

Adding to 4061 its reverse (1604), we get a palindrome (5665).

It can be divided in two parts, 40 and 61, that added together give a palindrome (101).

The spelling of 4061 in words is "four thousand, sixty-one".

Divisors: 1 31 131 4061