40005505 has 8 divisors (see below), whose sum is σ = 50830632. Its totient is φ = 30121728.

The previous prime is 40005479. The next prime is 40005541. The reversal of 40005505 is 50550004.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4626801 + 35378704 = 2151^2 + 5948^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40005505 - 2⁷ = 40005377 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 235242 + ... + 235411.

It is an arithmetic number, because the mean of its divisors is an integer number (6353829).

Almost surely, 2^40005505 is an apocalyptic number.

It is an amenable number.

40005505 is a deficient number, since it is larger than the sum of its proper divisors (10825127).

40005505 is a wasteful number, since it uses less digits than its factorization.

40005505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470675.

The product of its (nonzero) digits is 500, while the sum is 19.

The square root of 40005505 is about 6324.9905138269. The cubic root of 40005505 is about 342.0108776450.

Adding to 40005505 its reverse (50550004), we get a palindrome (90555509).

The spelling of 40005505 in words is "forty million, five thousand, five hundred five".