72919153 has 2 divisors, whose sum is σ = 72919154. Its totient is φ = 72919152.

The previous prime is 72919151. The next prime is 72919163. The reversal of 72919153 is 35191927.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55845729 + 17073424 = 7473^2 + 4132^2 .

It is an emirp because it is prime and its reverse (35191927) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72919153 - 2¹ = 72919151 is a prime.

Together with 72919151, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (72919151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36459576 + 36459577.

It is an arithmetic number, because the mean of its divisors is an integer number (36459577).

Almost surely, 2^72919153 is an apocalyptic number.

It is an amenable number.

72919153 is a deficient number, since it is larger than the sum of its proper divisors (1).

72919153 is an equidigital number, since it uses as much as digits as its factorization.

72919153 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17010, while the sum is 37.

The square root of 72919153 is about 8539.2712218315. The cubic root of 72919153 is about 417.7795763282.

The spelling of 72919153 in words is "seventy-two million, nine hundred nineteen thousand, one hundred fifty-three".