72534163 has 8 divisors (see below), whose sum is σ = 79930928. Its totient is φ = 65397024.

The previous prime is 72534151. The next prime is 72534167. The reversal of 72534163 is 36143527.

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-72534163 is a prime.

It is a super-2 number, since 2×72534163² = 10522409604221138, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72534167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64320 + ... + 65437.

It is an arithmetic number, because the mean of its divisors is an integer number (9991366).

Almost surely, 2^72534163 is an apocalyptic number.

72534163 is a deficient number, since it is larger than the sum of its proper divisors (7396765).

72534163 is a wasteful number, since it uses less digits than its factorization.

72534163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129813.

The product of its digits is 15120, while the sum is 31.

The square root of 72534163 is about 8516.6990671269. The cubic root of 72534163 is about 417.0430306757.

The spelling of 72534163 in words is "seventy-two million, five hundred thirty-four thousand, one hundred sixty-three".