163523445 has 16 divisors (see below), whose sum is σ = 273013632. Its totient is φ = 83420480.

The previous prime is 163523441. The next prime is 163523449. The reversal of 163523445 is 544325361.

It is an interprime number because it is at equal distance from previous prime (163523441) and next prime (163523449).

It is not a de Polignac number, because 163523445 - 2² = 163523441 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163523441) 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, 236646 + ... + 237335.

It is an arithmetic number, because the mean of its divisors is an integer number (17063352).

Almost surely, 2^163523445 is an apocalyptic number.

163523445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

163523445 is a deficient number, since it is larger than the sum of its proper divisors (109490187).

163523445 is a wasteful number, since it uses less digits than its factorization.

163523445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 474012.

The product of its digits is 43200, while the sum is 33.

The square root of 163523445 is about 12787.6285917288. The cubic root of 163523445 is about 546.8396659402.

The spelling of 163523445 in words is "one hundred sixty-three million, five hundred twenty-three thousand, four hundred forty-five".