16401513 has 8 divisors (see below), whose sum is σ = 21939808. Its totient is φ = 10898784.

The previous prime is 16401499. The next prime is 16401523. The reversal of 16401513 is 31510461.

16401513 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16401513 - 2⁸ = 16401257 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16401513.

It is not an unprimeable number, because it can be changed into a prime (16401523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7795 + ... + 9672.

It is an arithmetic number, because the mean of its divisors is an integer number (2742476).

Almost surely, 2^16401513 is an apocalyptic number.

It is an amenable number.

16401513 is a deficient number, since it is larger than the sum of its proper divisors (5538295).

16401513 is a wasteful number, since it uses less digits than its factorization.

16401513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17783.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 16401513 is about 4049.8781463150. The cubic root of 16401513 is about 254.0746313853.

Adding to 16401513 its reverse (31510461), we get a palindrome (47911974).

The spelling of 16401513 in words is "sixteen million, four hundred one thousand, five hundred thirteen".