406312155 has 48 divisors (see below), whose sum is σ = 758013984. Its totient is φ = 200586240.

The previous prime is 406312139. The next prime is 406312163. The reversal of 406312155 is 551213604.

406312155 is a `hidden beast` number, since 4 + 0 + 631 + 21 + 5 + 5 = 666.

It is not a de Polignac number, because 406312155 - 2⁴ = 406312139 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 42312 + ... + 51018.

It is an arithmetic number, because the mean of its divisors is an integer number (15791958).

Almost surely, 2^406312155 is an apocalyptic number.

406312155 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

406312155 is a deficient number, since it is larger than the sum of its proper divisors (351701829).

406312155 is a wasteful number, since it uses less digits than its factorization.

406312155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8796 (or 8793 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 406312155 is about 20157.1861875610. The cubic root of 406312155 is about 740.6617862410.

Adding to 406312155 its reverse (551213604), we get a palindrome (957525759).

The spelling of 406312155 in words is "four hundred six million, three hundred twelve thousand, one hundred fifty-five".