4100561 has 8 divisors (see below), whose sum is σ = 4358880. Its totient is φ = 3846528.

The previous prime is 4100549. The next prime is 4100573. The reversal of 4100561 is 1650014.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (4100549) and next prime (4100573).

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

It is a cyclic number.

It is not a de Polignac number, because 4100561 - 2¹⁴ = 4084177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4100521) 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, 1025 + ... + 3041.

It is an arithmetic number, because the mean of its divisors is an integer number (544860).

Almost surely, 2^4100561 is an apocalyptic number.

It is an amenable number.

4100561 is a deficient number, since it is larger than the sum of its proper divisors (258319).

4100561 is a wasteful number, since it uses less digits than its factorization.

4100561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2143.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 4100561 is about 2024.9841974692. The cubic root of 4100561 is about 160.0593659911.

Adding to 4100561 its reverse (1650014), we get a palindrome (5750575).

The spelling of 4100561 in words is "four million, one hundred thousand, five hundred sixty-one".