16555147 has 24 divisors (see below), whose sum is σ = 20590848. Its totient is φ = 13012560.

The previous prime is 16555111. The next prime is 16555151. The reversal of 16555147 is 74155561.

It is a de Polignac number, because none of the positive numbers 2^k-16555147 is a prime.

It is a Duffinian number.

Its product of digits (21000) is a multiple of the sum of its prime divisors (168).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16555177) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 154668 + ... + 154774.

It is an arithmetic number, because the mean of its divisors is an integer number (857952).

Almost surely, 2^16555147 is an apocalyptic number.

16555147 is a deficient number, since it is larger than the sum of its proper divisors (4035701).

16555147 is a wasteful number, since it uses less digits than its factorization.

16555147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199 (or 168 counting only the distinct ones).

The product of its digits is 21000, while the sum is 34.

The square root of 16555147 is about 4068.8016663386. The cubic root of 16555147 is about 254.8654781951.

The spelling of 16555147 in words is "sixteen million, five hundred fifty-five thousand, one hundred forty-seven".