16485551 has 8 divisors (see below), whose sum is σ = 16830000. Its totient is φ = 16144128.

The previous prime is 16485541. The next prime is 16485577. The reversal of 16485551 is 15558461.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16485551 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 (16485541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12575 + ... + 13823.

It is an arithmetic number, because the mean of its divisors is an integer number (2103750).

Almost surely, 2^16485551 is an apocalyptic number.

16485551 is a deficient number, since it is larger than the sum of its proper divisors (344449).

16485551 is a wasteful number, since it uses less digits than its factorization.

16485551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1513.

The product of its digits is 24000, while the sum is 35.

The square root of 16485551 is about 4060.2402638268. The cubic root of 16485551 is about 254.5078345029.

The spelling of 16485551 in words is "sixteen million, four hundred eighty-five thousand, five hundred fifty-one".