4136561 has 8 divisors (see below), whose sum is σ = 4859904. Its totient is φ = 3471120.

The previous prime is 4136551. The next prime is 4136567. The reversal of 4136561 is 1656314.

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 4136561 - 2⁶ = 4136497 is a prime.

It is a super-2 number, since 2×4136561² = 34222273813442, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4136561.

It is not an unprimeable number, because it can be changed into a prime (4136567) 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, 14321 + ... + 14606.

It is an arithmetic number, because the mean of its divisors is an integer number (607488).

Almost surely, 2^4136561 is an apocalyptic number.

It is an amenable number.

4136561 is a deficient number, since it is larger than the sum of its proper divisors (723343).

4136561 is a wasteful number, since it uses less digits than its factorization.

4136561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28951.

The product of its digits is 2160, while the sum is 26.

The square root of 4136561 is about 2033.8537312206. The cubic root of 4136561 is about 160.5264042376.

The spelling of 4136561 in words is "four million, one hundred thirty-six thousand, five hundred sixty-one".