16332501 has 4 divisors (see below), whose sum is σ = 21776672. Its totient is φ = 10888332.

The previous prime is 16332493. The next prime is 16332517. The reversal of 16332501 is 10523361.

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 not a de Polignac number, because 16332501 - 2³ = 16332493 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 (16332521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2722081 + ... + 2722086.

It is an arithmetic number, because the mean of its divisors is an integer number (5444168).

Almost surely, 2^16332501 is an apocalyptic number.

It is an amenable number.

16332501 is a deficient number, since it is larger than the sum of its proper divisors (5444171).

16332501 is an equidigital number, since it uses as much as digits as its factorization.

16332501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5444170.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 16332501 is about 4041.3489084710. The cubic root of 16332501 is about 253.7177771373.

Adding to 16332501 its reverse (10523361), we get a palindrome (26855862).

The spelling of 16332501 in words is "sixteen million, three hundred thirty-two thousand, five hundred one".