16222155 has 8 divisors (see below), whose sum is σ = 25955472. Its totient is φ = 8651808.

The previous prime is 16222127. The next prime is 16222211. The reversal of 16222155 is 55122261.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16222155 - 2⁷ = 16222027 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 540724 + ... + 540753.

It is an arithmetic number, because the mean of its divisors is an integer number (3244434).

Almost surely, 2^16222155 is an apocalyptic number.

16222155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

16222155 is a deficient number, since it is larger than the sum of its proper divisors (9733317).

16222155 is a wasteful number, since it uses less digits than its factorization.

16222155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1081485.

The product of its digits is 1200, while the sum is 24.

The square root of 16222155 is about 4027.6736461635. The cubic root of 16222155 is about 253.1450942743.

The spelling of 16222155 in words is "sixteen million, two hundred twenty-two thousand, one hundred fifty-five".