405381573 has 12 divisors (see below), whose sum is σ = 590924620. Its totient is φ = 267774336.

The previous prime is 405381553. The next prime is 405381593. The reversal of 405381573 is 375183504.

405381573 is a `hidden beast` number, since 4 + 0 + 5 + 3 + 81 + 573 = 666.

It is an interprime number because it is at equal distance from previous prime (405381553) and next prime (405381593).

It can be written as a sum of positive squares in 2 ways, for example, as 323352324 + 82029249 = 17982^2 + 9057^2 .

It is not a de Polignac number, because 405381573 - 2⁹ = 405381061 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405381503) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 205636 + ... + 207597.

Almost surely, 2^405381573 is an apocalyptic number.

It is an amenable number.

405381573 is a deficient number, since it is larger than the sum of its proper divisors (185543047).

405381573 is a wasteful number, since it uses less digits than its factorization.

405381573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413348 (or 413345 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 405381573 is about 20134.0898229843. The cubic root of 405381573 is about 740.0959049063.

The spelling of 405381573 in words is "four hundred five million, three hundred eighty-one thousand, five hundred seventy-three".