405534361 has 2 divisors, whose sum is σ = 405534362. Its totient is φ = 405534360.

The previous prime is 405534341. The next prime is 405534401. The reversal of 405534361 is 163435504.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 378691600 + 26842761 = 19460^2 + 5181^2 .

It is a cyclic number.

It is not a de Polignac number, because 405534361 - 2⁵ = 405534329 is a prime.

It is equal to p_21615565 and since 405534361 and 21615565 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (405534331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202767180 + 202767181.

It is an arithmetic number, because the mean of its divisors is an integer number (202767181).

Almost surely, 2^405534361 is an apocalyptic number.

It is an amenable number.

405534361 is a deficient number, since it is larger than the sum of its proper divisors (1).

405534361 is an equidigital number, since it uses as much as digits as its factorization.

405534361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21600, while the sum is 31.

The square root of 405534361 is about 20137.8837269461. The cubic root of 405534361 is about 740.1888737512.

Adding to 405534361 its reverse (163435504), we get a palindrome (568969865).

It can be divided in two parts, 4055 and 34361, that added together give a 4-th power (38416 = 14⁴).

The spelling of 405534361 in words is "four hundred five million, five hundred thirty-four thousand, three hundred sixty-one".