405015161 has 2 divisors, whose sum is σ = 405015162. Its totient is φ = 405015160.

The previous prime is 405015103. The next prime is 405015181. The reversal of 405015161 is 161510504.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 223951225 + 181063936 = 14965^2 + 13456^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-405015161 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (405015101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202507580 + 202507581.

It is an arithmetic number, because the mean of its divisors is an integer number (202507581).

Almost surely, 2^405015161 is an apocalyptic number.

It is an amenable number.

405015161 is a deficient number, since it is larger than the sum of its proper divisors (1).

405015161 is an equidigital number, since it uses as much as digits as its factorization.

405015161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 600, while the sum is 23.

The square root of 405015161 is about 20124.9884720464. The cubic root of 405015161 is about 739.8728543423.

Adding to 405015161 its reverse (161510504), we get a palindrome (566525665).

The spelling of 405015161 in words is "four hundred five million, fifteen thousand, one hundred sixty-one".