163215401 has 16 divisors (see below), whose sum is σ = 170755200. Its totient is φ = 155893248.

The previous prime is 163215397. The next prime is 163215407. The reversal of 163215401 is 104512361.

163215401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 163215401 - 2² = 163215397 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (163215407) 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, 454460 + ... + 454818.

It is an arithmetic number, because the mean of its divisors is an integer number (10672200).

Almost surely, 2^163215401 is an apocalyptic number.

It is an amenable number.

163215401 is a deficient number, since it is larger than the sum of its proper divisors (7539799).

163215401 is a wasteful number, since it uses less digits than its factorization.

163215401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 608.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 163215401 is about 12775.5783039360. The cubic root of 163215401 is about 546.4960728769.

Adding to 163215401 its reverse (104512361), we get a palindrome (267727762).

The spelling of 163215401 in words is "one hundred sixty-three million, two hundred fifteen thousand, four hundred one".