72955843 has 2 divisors, whose sum is σ = 72955844. Its totient is φ = 72955842.

The previous prime is 72955829. The next prime is 72955847. The reversal of 72955843 is 34855927.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72955843 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72955843.

It is not a weakly prime, because it can be changed into another prime (72955847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36477921 + 36477922.

It is an arithmetic number, because the mean of its divisors is an integer number (36477922).

Almost surely, 2^72955843 is an apocalyptic number.

72955843 is a deficient number, since it is larger than the sum of its proper divisors (1).

72955843 is an equidigital number, since it uses as much as digits as its factorization.

72955843 is an evil number, because the sum of its binary digits is even.

The product of its digits is 302400, while the sum is 43.

The square root of 72955843 is about 8541.4192614577. The cubic root of 72955843 is about 417.8496345680.

The spelling of 72955843 in words is "seventy-two million, nine hundred fifty-five thousand, eight hundred forty-three".