40305155 has 16 divisors (see below), whose sum is σ = 53050464. Its totient is φ = 29153280.

The previous prime is 40305121. The next prime is 40305193. The reversal of 40305155 is 55150304.

It is not a de Polignac number, because 40305155 - 2¹² = 40301059 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40305155.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8717 + ... + 12513.

It is an arithmetic number, because the mean of its divisors is an integer number (3315654).

Almost surely, 2^40305155 is an apocalyptic number.

40305155 is a deficient number, since it is larger than the sum of its proper divisors (12745309).

40305155 is a wasteful number, since it uses less digits than its factorization.

40305155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4006.

The product of its (nonzero) digits is 1500, while the sum is 23.

The square root of 40305155 is about 6348.6341050654. The cubic root of 40305155 is about 342.8626666190.

Adding to 40305155 its reverse (55150304), we get a palindrome (95455459).

The spelling of 40305155 in words is "forty million, three hundred five thousand, one hundred fifty-five".