41513561 has 2 divisors, whose sum is σ = 41513562. Its totient is φ = 41513560.

The previous prime is 41513513. The next prime is 41513569. The reversal of 41513561 is 16531514.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32775625 + 8737936 = 5725^2 + 2956^2 .

It is a cyclic number.

It is not a de Polignac number, because 41513561 - 2⁶ = 41513497 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 41513561.

It is not a weakly prime, because it can be changed into another prime (41513569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20756780 + 20756781.

It is an arithmetic number, because the mean of its divisors is an integer number (20756781).

Almost surely, 2^41513561 is an apocalyptic number.

It is an amenable number.

41513561 is a deficient number, since it is larger than the sum of its proper divisors (1).

41513561 is an equidigital number, since it uses as much as digits as its factorization.

41513561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1800, while the sum is 26.

The square root of 41513561 is about 6443.1018151198. The cubic root of 41513561 is about 346.2554858441.

The spelling of 41513561 in words is "forty-one million, five hundred thirteen thousand, five hundred sixty-one".