16380501 has 4 divisors (see below), whose sum is σ = 21840672. Its totient is φ = 10920332.

The previous prime is 16380499. The next prime is 16380509. The reversal of 16380501 is 10508361.

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 16380501 - 2¹ = 16380499 is a prime.

It is a super-2 number, since 2×16380501² = 536641626022002, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16380509) 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, 2730081 + ... + 2730086.

It is an arithmetic number, because the mean of its divisors is an integer number (5460168).

Almost surely, 2^16380501 is an apocalyptic number.

It is an amenable number.

16380501 is a deficient number, since it is larger than the sum of its proper divisors (5460171).

16380501 is an equidigital number, since it uses as much as digits as its factorization.

16380501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5460170.

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 16380501 is about 4047.2831628143. The cubic root of 16380501 is about 253.9660865710.

Adding to 16380501 its reverse (10508361), we get a palindrome (26888862).

The spelling of 16380501 in words is "sixteen million, three hundred eighty thousand, five hundred one".