16742551 has 8 divisors (see below), whose sum is σ = 19966464. Its totient is φ = 13726680.

The previous prime is 16742527. The next prime is 16742587. The reversal of 16742551 is 15524761.

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 16742551 - 2⁵ = 16742519 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16742521) 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, 51835 + ... + 52156.

It is an arithmetic number, because the mean of its divisors is an integer number (2495808).

Almost surely, 2^16742551 is an apocalyptic number.

16742551 is a deficient number, since it is larger than the sum of its proper divisors (3223913).

16742551 is a wasteful number, since it uses less digits than its factorization.

16742551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104021.

The product of its digits is 8400, while the sum is 31.

The square root of 16742551 is about 4091.7662445453. The cubic root of 16742551 is about 255.8235631189.

It can be divided in two parts, 1674 and 2551, that added together give a square (4225 = 65²).

The spelling of 16742551 in words is "sixteen million, seven hundred forty-two thousand, five hundred fifty-one".