403540155 has 24 divisors (see below), whose sum is σ = 700252800. Its totient is φ = 214980480.

The previous prime is 403540103. The next prime is 403540187. The reversal of 403540155 is 551045304.

It is not a de Polignac number, because 403540155 - 2⁶ = 403540091 is a prime.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 40071 + ... + 49119.

It is an arithmetic number, because the mean of its divisors is an integer number (29177200).

Almost surely, 2^403540155 is an apocalyptic number.

403540155 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

403540155 is a deficient number, since it is larger than the sum of its proper divisors (296712645).

403540155 is a wasteful number, since it uses less digits than its factorization.

403540155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10051 (or 10048 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 403540155 is about 20088.3089133954. The cubic root of 403540155 is about 738.9735922100.

Adding to 403540155 its reverse (551045304), we get a palindrome (954585459).

The spelling of 403540155 in words is "four hundred three million, five hundred forty thousand, one hundred fifty-five".