16216155 has 24 divisors (see below), whose sum is σ = 28284048. Its totient is φ = 8594496.

The previous prime is 16216141. The next prime is 16216163. The reversal of 16216155 is 55161261.

It is a happy number.

It is not a de Polignac number, because 16216155 - 2⁹ = 16215643 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6744 + ... + 8826.

It is an arithmetic number, because the mean of its divisors is an integer number (1178502).

Almost surely, 2^16216155 is an apocalyptic number.

16216155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

16216155 is a deficient number, since it is larger than the sum of its proper divisors (12067893).

16216155 is a wasteful number, since it uses less digits than its factorization.

16216155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2267 (or 2264 counting only the distinct ones).

The product of its digits is 1800, while the sum is 27.

The square root of 16216155 is about 4026.9287304346. The cubic root of 16216155 is about 253.1138806272.

It can be divided in two parts, 1621 and 6155, that added together give a 5-th power (7776 = 6⁵).

The spelling of 16216155 in words is "sixteen million, two hundred sixteen thousand, one hundred fifty-five".