41552561 has 2 divisors, whose sum is σ = 41552562. Its totient is φ = 41552560.

The previous prime is 41552543. The next prime is 41552597. The reversal of 41552561 is 16525514.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41473600 + 78961 = 6440^2 + 281^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-41552561 is a prime.

It is not a weakly prime, because it can be changed into another prime (41552501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20776280 + 20776281.

It is an arithmetic number, because the mean of its divisors is an integer number (20776281).

Almost surely, 2^41552561 is an apocalyptic number.

It is an amenable number.

41552561 is a deficient number, since it is larger than the sum of its proper divisors (1).

41552561 is an equidigital number, since it uses as much as digits as its factorization.

41552561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6000, while the sum is 29.

The square root of 41552561 is about 6446.1275972478. The cubic root of 41552561 is about 346.3638820489.

The spelling of 41552561 in words is "forty-one million, five hundred fifty-two thousand, five hundred sixty-one".