16415401 has 4 divisors (see below), whose sum is σ = 16447312. Its totient is φ = 16383492.

The previous prime is 16415389. The next prime is 16415417. The reversal of 16415401 is 10451461.

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 a de Polignac number, because none of the positive numbers 2^k-16415401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16415471) 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, 15171 + ... + 16216.

It is an arithmetic number, because the mean of its divisors is an integer number (4111828).

Almost surely, 2^16415401 is an apocalyptic number.

It is an amenable number.

16415401 is a deficient number, since it is larger than the sum of its proper divisors (31911).

16415401 is an equidigital number, since it uses as much as digits as its factorization.

16415401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31910.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 16415401 is about 4051.5924029942. The cubic root of 16415401 is about 254.1463238160.

Adding to 16415401 its reverse (10451461), we get a palindrome (26866862).

The spelling of 16415401 in words is "sixteen million, four hundred fifteen thousand, four hundred one".