404122545 has 12 divisors (see below), whose sum is σ = 700479156. Its totient is φ = 215532000.

The previous prime is 404122529. The next prime is 404122559. The reversal of 404122545 is 545221404.

404122545 is a `hidden beast` number, since 404 + 1 + 2 + 254 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 300571569 + 103550976 = 17337^2 + 10176^2 .

It is not a de Polignac number, because 404122545 - 2⁴ = 404122529 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4490206 + ... + 4490295.

It is an arithmetic number, because the mean of its divisors is an integer number (58373263).

Almost surely, 2^404122545 is an apocalyptic number.

404122545 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

404122545 is a deficient number, since it is larger than the sum of its proper divisors (296356611).

404122545 is a wasteful number, since it uses less digits than its factorization.

404122545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8980512 (or 8980509 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The square root of 404122545 is about 20102.7994319199. The cubic root of 404122545 is about 739.3289174100.

Adding to 404122545 its reverse (545221404), we get a palindrome (949343949).

The spelling of 404122545 in words is "four hundred four million, one hundred twenty-two thousand, five hundred forty-five".