163420501 has 16 divisors (see below), whose sum is σ = 177422400. Its totient is φ = 150035328.

The previous prime is 163420489. The next prime is 163420519. The reversal of 163420501 is 105024361.

It is a cyclic number.

It is not a de Polignac number, because 163420501 - 2⁵ = 163420469 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 (163420531) 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, 80835 + ... + 82831.

It is an arithmetic number, because the mean of its divisors is an integer number (11088900).

Almost surely, 2^163420501 is an apocalyptic number.

It is an amenable number.

163420501 is a deficient number, since it is larger than the sum of its proper divisors (14001899).

163420501 is a wasteful number, since it uses less digits than its factorization.

163420501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2148.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 163420501 is about 12783.6028176723. The cubic root of 163420501 is about 546.7248899831.

Adding to 163420501 its reverse (105024361), we get a palindrome (268444862).

The spelling of 163420501 in words is "one hundred sixty-three million, four hundred twenty thousand, five hundred one".