40515361 has 2 divisors, whose sum is σ = 40515362. Its totient is φ = 40515360.

The previous prime is 40515341. The next prime is 40515401. The reversal of 40515361 is 16351504.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38825361 + 1690000 = 6231^2 + 1300^2 .

It is a cyclic number.

It is not a de Polignac number, because 40515361 - 2⁹ = 40514849 is a prime.

It is not a weakly prime, because it can be changed into another prime (40515311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20257680 + 20257681.

It is an arithmetic number, because the mean of its divisors is an integer number (20257681).

Almost surely, 2^40515361 is an apocalyptic number.

It is an amenable number.

40515361 is a deficient number, since it is larger than the sum of its proper divisors (1).

40515361 is an equidigital number, since it uses as much as digits as its factorization.

40515361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 40515361 is about 6365.1677904043. The cubic root of 40515361 is about 343.4576844520.

Adding to 40515361 its reverse (16351504), we get a palindrome (56866865).

The spelling of 40515361 in words is "forty million, five hundred fifteen thousand, three hundred sixty-one".