405541013 has 2 divisors, whose sum is σ = 405541014. Its totient is φ = 405541012.

The previous prime is 405541009. The next prime is 405541033. The reversal of 405541013 is 310145504.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 377641489 + 27899524 = 19433^2 + 5282^2 .

It is a cyclic number.

It is not a de Polignac number, because 405541013 - 2² = 405541009 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 405541013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (405541033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202770506 + 202770507.

It is an arithmetic number, because the mean of its divisors is an integer number (202770507).

Almost surely, 2^405541013 is an apocalyptic number.

It is an amenable number.

405541013 is a deficient number, since it is larger than the sum of its proper divisors (1).

405541013 is an equidigital number, since it uses as much as digits as its factorization.

405541013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 405541013 is about 20138.0488876157. The cubic root of 405541013 is about 740.1929208472.

Adding to 405541013 its reverse (310145504), we get a palindrome (715686517).

The spelling of 405541013 in words is "four hundred five million, five hundred forty-one thousand, thirteen".