403216155 has 12 divisors (see below), whose sum is σ = 698908080. Its totient is φ = 215048592.

The previous prime is 403216129. The next prime is 403216169. The reversal of 403216155 is 551612304.

403216155 is a `hidden beast` number, since 40 + 3 + 2 + 1 + 615 + 5 = 666.

It is not a de Polignac number, because 403216155 - 2⁵ = 403216123 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4480135 + ... + 4480224.

It is an arithmetic number, because the mean of its divisors is an integer number (58242340).

Almost surely, 2^403216155 is an apocalyptic number.

403216155 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

403216155 is a deficient number, since it is larger than the sum of its proper divisors (295691925).

403216155 is a wasteful number, since it uses less digits than its factorization.

403216155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8960370 (or 8960367 counting only the distinct ones).

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

The square root of 403216155 is about 20080.2429019173. The cubic root of 403216155 is about 738.7757667497.

Adding to 403216155 its reverse (551612304), we get a palindrome (954828459).

The spelling of 403216155 in words is "four hundred three million, two hundred sixteen thousand, one hundred fifty-five".