40303155 has 16 divisors (see below), whose sum is σ = 65090304. Its totient is φ = 21293280.

The previous prime is 40303139. The next prime is 40303157. The reversal of 40303155 is 55130304.

It is not a de Polignac number, because 40303155 - 2⁴ = 40303139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40303157) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10951 + ... + 14160.

It is an arithmetic number, because the mean of its divisors is an integer number (4068144).

Almost surely, 2^40303155 is an apocalyptic number.

40303155 is a deficient number, since it is larger than the sum of its proper divisors (24787149).

40303155 is a wasteful number, since it uses less digits than its factorization.

40303155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25226.

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 40303155 is about 6348.4765889149. The cubic root of 40303155 is about 342.8569954116.

Adding to 40303155 its reverse (55130304), we get a palindrome (95433459).

The spelling of 40303155 in words is "forty million, three hundred three thousand, one hundred fifty-five".