72251143 has 8 divisors (see below), whose sum is σ = 74516400. Its totient is φ = 70009920.

The previous prime is 72251131. The next prime is 72251161. The reversal of 72251143 is 34115227.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 72251143 - 2²¹ = 70153991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72251743) 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, 196 + ... + 12022.

It is an arithmetic number, because the mean of its divisors is an integer number (9314550).

Almost surely, 2^72251143 is an apocalyptic number.

72251143 is a deficient number, since it is larger than the sum of its proper divisors (2265257).

72251143 is a wasteful number, since it uses less digits than its factorization.

72251143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12017.

The product of its digits is 1680, while the sum is 25.

The square root of 72251143 is about 8500.0672350282. The cubic root of 72251143 is about 416.4999056045.

The spelling of 72251143 in words is "seventy-two million, two hundred fifty-one thousand, one hundred forty-three".