72143575 has 12 divisors (see below), whose sum is σ = 102238000. Its totient is φ = 49469760.

The previous prime is 72143537. The next prime is 72143579. The reversal of 72143575 is 57534127.

It is not a de Polignac number, because 72143575 - 2⁷ = 72143447 is a prime.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 72143575.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72143579) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 205950 + ... + 206299.

Almost surely, 2^72143575 is an apocalyptic number.

72143575 is a deficient number, since it is larger than the sum of its proper divisors (30094425).

72143575 is a wasteful number, since it uses less digits than its factorization.

72143575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412266 (or 412261 counting only the distinct ones).

The product of its digits is 29400, while the sum is 34.

The square root of 72143575 is about 8493.7373988133. The cubic root of 72143575 is about 416.2931069654.

The spelling of 72143575 in words is "seventy-two million, one hundred forty-three thousand, five hundred seventy-five".