72251343 has 24 divisors (see below), whose sum is σ = 113497488. Its totient is φ = 44105472.

The previous prime is 72251329. The next prime is 72251353. The reversal of 72251343 is 34315227.

72251343 is a `hidden beast` number, since 72 + 251 + 343 = 666.

It is not a de Polignac number, because 72251343 - 2⁶ = 72251279 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72251353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 721 + ... + 12042.

It is an arithmetic number, because the mean of its divisors is an integer number (4729062).

Almost surely, 2^72251343 is an apocalyptic number.

72251343 is a deficient number, since it is larger than the sum of its proper divisors (41246145).

72251343 is a wasteful number, since it uses less digits than its factorization.

72251343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12823 (or 12820 counting only the distinct ones).

The product of its digits is 5040, while the sum is 27.

The square root of 72251343 is about 8500.0789996329. The cubic root of 72251343 is about 416.5002899117.

The spelling of 72251343 in words is "seventy-two million, two hundred fifty-one thousand, three hundred forty-three".