152505217 has 2 divisors, whose sum is σ = 152505218. Its totient is φ = 152505216.

The previous prime is 152505193. The next prime is 152505239. The reversal of 152505217 is 712505251.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81793936 + 70711281 = 9044^2 + 8409^2 .

It is an emirp because it is prime and its reverse (712505251) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-152505217 is a prime.

It is not a weakly prime, because it can be changed into another prime (152505517) 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, 76252608 + 76252609.

It is an arithmetic number, because the mean of its divisors is an integer number (76252609).

Almost surely, 2^152505217 is an apocalyptic number.

It is an amenable number.

152505217 is a deficient number, since it is larger than the sum of its proper divisors (1).

152505217 is an equidigital number, since it uses as much as digits as its factorization.

152505217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3500, while the sum is 28.

The square root of 152505217 is about 12349.3002635777. The cubic root of 152505217 is about 534.2709573761.

The spelling of 152505217 in words is "one hundred fifty-two million, five hundred five thousand, two hundred seventeen".