40205155 has 8 divisors (see below), whose sum is σ = 48387312. Its totient is φ = 32070048.

The previous prime is 40205141. The next prime is 40205177. The reversal of 40205155 is 55150204.

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 40205155 - 2¹⁵ = 40172387 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, 9852 + ... + 13321.

It is an arithmetic number, because the mean of its divisors is an integer number (6048414).

Almost surely, 2^40205155 is an apocalyptic number.

40205155 is a deficient number, since it is larger than the sum of its proper divisors (8182157).

40205155 is a wasteful number, since it uses less digits than its factorization.

40205155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23525.

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 40205155 is about 6340.7535041192. The cubic root of 40205155 is about 342.5788761098.

Adding to 40205155 its reverse (55150204), we get a palindrome (95355359).

The spelling of 40205155 in words is "forty million, two hundred five thousand, one hundred fifty-five".