163572133 has 8 divisors (see below), whose sum is σ = 165310488. Its totient is φ = 161839104.

The previous prime is 163572119. The next prime is 163572139. The reversal of 163572133 is 331275361.

It can be written as a sum of positive squares in 4 ways, for example, as 1340964 + 162231169 = 1158^2 + 12737^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-163572133 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 163572095 and 163572104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163572139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95541 + ... + 97237.

It is an arithmetic number, because the mean of its divisors is an integer number (20663811).

Almost surely, 2^163572133 is an apocalyptic number.

It is an amenable number.

163572133 is a deficient number, since it is larger than the sum of its proper divisors (1738355).

163572133 is a wasteful number, since it uses less digits than its factorization.

163572133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2663.

The product of its digits is 11340, while the sum is 31.

The square root of 163572133 is about 12789.5321650168. The cubic root of 163572133 is about 546.8939331589.

The spelling of 163572133 in words is "one hundred sixty-three million, five hundred seventy-two thousand, one hundred thirty-three".