16531055 has 8 divisors (see below), whose sum is σ = 21004272. Its totient is φ = 12446848.

The previous prime is 16531051. The next prime is 16531063. The reversal of 16531055 is 55013561.

16531055 = 351² + 352² + ... + 452².

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 16531055 - 2² = 16531051 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 (16531051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97157 + ... + 97326.

It is an arithmetic number, because the mean of its divisors is an integer number (2625534).

Almost surely, 2^16531055 is an apocalyptic number.

16531055 is a deficient number, since it is larger than the sum of its proper divisors (4473217).

16531055 is a wasteful number, since it uses less digits than its factorization.

16531055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194505.

The product of its (nonzero) digits is 2250, while the sum is 26.

The square root of 16531055 is about 4065.8400116089. The cubic root of 16531055 is about 254.7417865511.

The spelling of 16531055 in words is "sixteen million, five hundred thirty-one thousand, fifty-five".