72952543 has 4 divisors (see below), whose sum is σ = 73374408. Its totient is φ = 72530680.

The previous prime is 72952541. The next prime is 72952547. The reversal of 72952543 is 34525927.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34525927 = 1439 ⋅23993.

It is a cyclic number.

It is not a de Polignac number, because 72952543 - 2¹ = 72952541 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 (72952541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 210673 + ... + 211018.

It is an arithmetic number, because the mean of its divisors is an integer number (18343602).

Almost surely, 2^72952543 is an apocalyptic number.

72952543 is a deficient number, since it is larger than the sum of its proper divisors (421865).

72952543 is a wasteful number, since it uses less digits than its factorization.

72952543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421864.

The product of its digits is 75600, while the sum is 37.

The square root of 72952543 is about 8541.2260829462. The cubic root of 72952543 is about 417.8433342977.

The spelling of 72952543 in words is "seventy-two million, nine hundred fifty-two thousand, five hundred forty-three".