72298157 has 2 divisors, whose sum is σ = 72298158. Its totient is φ = 72298156.

The previous prime is 72298147. The next prime is 72298199. The reversal of 72298157 is 75189227.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44903401 + 27394756 = 6701^2 + 5234^2 .

It is an emirp because it is prime and its reverse (75189227) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72298157 - 2¹⁰ = 72297133 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72298117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36149078 + 36149079.

It is an arithmetic number, because the mean of its divisors is an integer number (36149079).

Almost surely, 2^72298157 is an apocalyptic number.

It is an amenable number.

72298157 is a deficient number, since it is larger than the sum of its proper divisors (1).

72298157 is an equidigital number, since it uses as much as digits as its factorization.

72298157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 70560, while the sum is 41.

The square root of 72298157 is about 8502.8322928304. The cubic root of 72298157 is about 416.5902251947.

The spelling of 72298157 in words is "seventy-two million, two hundred ninety-eight thousand, one hundred fifty-seven".