16400053 has 16 divisors (see below), whose sum is σ = 17962560. Its totient is φ = 14914816.

The previous prime is 16400047. The next prime is 16400093. The reversal of 16400053 is 35000461.

It is a cyclic number.

It is not a de Polignac number, because 16400053 - 2⁹ = 16399541 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 16400053.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16400093) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83151 + ... + 83347.

It is an arithmetic number, because the mean of its divisors is an integer number (1122660).

Almost surely, 2^16400053 is an apocalyptic number.

It is an amenable number.

16400053 is a deficient number, since it is larger than the sum of its proper divisors (1562507).

16400053 is a wasteful number, since it uses less digits than its factorization.

With its successor (16400054) it forms a Ruth-Aaron pair, since the sum of their distinct prime factors is the same (356).

16400053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 16400053 is about 4049.6978899666. The cubic root of 16400053 is about 254.0670922441.

The spelling of 16400053 in words is "sixteen million, four hundred thousand, fifty-three".