404153545 has 4 divisors (see below), whose sum is σ = 484984260. Its totient is φ = 323322832.

The previous prime is 404153537. The next prime is 404153549. The reversal of 404153545 is 545351404.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 319587129 + 84566416 = 17877^2 + 9196^2 .

It is a cyclic number.

It is not a de Polignac number, because 404153545 - 2³ = 404153537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (404153549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40415350 + ... + 40415359.

It is an arithmetic number, because the mean of its divisors is an integer number (121246065).

Almost surely, 2^404153545 is an apocalyptic number.

It is an amenable number.

404153545 is a deficient number, since it is larger than the sum of its proper divisors (80830715).

404153545 is an equidigital number, since it uses as much as digits as its factorization.

404153545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80830714.

The product of its (nonzero) digits is 24000, while the sum is 31.

The square root of 404153545 is about 20103.5704540263. The cubic root of 404153545 is about 739.3478214204.

The spelling of 404153545 in words is "four hundred four million, one hundred fifty-three thousand, five hundred forty-five".