16055551 has 8 divisors (see below), whose sum is σ = 17446400. Its totient is φ = 14719320.

The previous prime is 16055539. The next prime is 16055573. The reversal of 16055551 is 15555061.

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

It is a cyclic number.

It is not a de Polignac number, because 16055551 - 2¹⁷ = 15924479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16053551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13041 + ... + 14218.

It is an arithmetic number, because the mean of its divisors is an integer number (2180800).

Almost surely, 2^16055551 is an apocalyptic number.

16055551 is a deficient number, since it is larger than the sum of its proper divisors (1390849).

16055551 is a wasteful number, since it uses less digits than its factorization.

16055551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27309.

The product of its (nonzero) digits is 3750, while the sum is 28.

The square root of 16055551 is about 4006.9378582653. The cubic root of 16055551 is about 252.2754976038.

The spelling of 16055551 in words is "sixteen million, fifty-five thousand, five hundred fifty-one".