6011561 has 2 divisors, whose sum is σ = 6011562. Its totient is φ = 6011560.

The previous prime is 6011549. The next prime is 6011573. The reversal of 6011561 is 1651106.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (6011549) and next prime (6011573).

It can be written as a sum of positive squares in only one way, i.e., 5851561 + 160000 = 2419^2 + 400^2 .

It is a cyclic number.

It is not a de Polignac number, because 6011561 - 2¹⁴ = 5995177 is a prime.

It is a super-2 number, since 2×6011561² = 72277731313442, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (6011521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3005780 + 3005781.

It is an arithmetic number, because the mean of its divisors is an integer number (3005781).

Almost surely, 2^6011561 is an apocalyptic number.

6011561 is the 1097-th centered decagonal number.

It is an amenable number.

6011561 is a deficient number, since it is larger than the sum of its proper divisors (1).

6011561 is an equidigital number, since it uses as much as digits as its factorization.

6011561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 6011561 is about 2451.8484863466. The cubic root of 6011561 is about 181.8286940210.

Adding to 6011561 its reverse (1651106), we get a palindrome (7662667).

The spelling of 6011561 in words is "six million, eleven thousand, five hundred sixty-one".