16790521 has 4 divisors (see below), whose sum is σ = 18316944. Its totient is φ = 15264100.

The previous prime is 16790519. The next prime is 16790533. The reversal of 16790521 is 12509761.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16790521 - 2¹ = 16790519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16790551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 763195 + ... + 763216.

It is an arithmetic number, because the mean of its divisors is an integer number (4579236).

Almost surely, 2^16790521 is an apocalyptic number.

16790521 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

16790521 is a deficient number, since it is larger than the sum of its proper divisors (1526423).

16790521 is a wasteful number, since it uses less digits than its factorization.

16790521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1526422.

The product of its (nonzero) digits is 3780, while the sum is 31.

The square root of 16790521 is about 4097.6238236324. The cubic root of 16790521 is about 256.0676548483.

The spelling of 16790521 in words is "sixteen million, seven hundred ninety thousand, five hundred twenty-one".