163523401 has 2 divisors, whose sum is σ = 163523402. Its totient is φ = 163523400.

The previous prime is 163523377. The next prime is 163523411. The reversal of 163523401 is 104325361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 130759225 + 32764176 = 11435^2 + 5724^2 .

It is a cyclic number.

It is not a de Polignac number, because 163523401 - 2⁵ = 163523369 is a prime.

It is not a weakly prime, because it can be changed into another prime (163523411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81761700 + 81761701.

It is an arithmetic number, because the mean of its divisors is an integer number (81761701).

Almost surely, 2^163523401 is an apocalyptic number.

It is an amenable number.

163523401 is a deficient number, since it is larger than the sum of its proper divisors (1).

163523401 is an equidigital number, since it uses as much as digits as its factorization.

163523401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 163523401 is about 12787.6268713159. The cubic root of 163523401 is about 546.8396168933.

Adding to 163523401 its reverse (104325361), we get a palindrome (267848762).

The spelling of 163523401 in words is "one hundred sixty-three million, five hundred twenty-three thousand, four hundred one".