152340491 has 2 divisors, whose sum is σ = 152340492. Its totient is φ = 152340490.

The previous prime is 152340473. The next prime is 152340527. The reversal of 152340491 is 194043251.

It is a weak prime.

It is an emirp because it is prime and its reverse (194043251) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-152340491 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (152340401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76170245 + 76170246.

It is an arithmetic number, because the mean of its divisors is an integer number (76170246).

Almost surely, 2^152340491 is an apocalyptic number.

152340491 is a deficient number, since it is larger than the sum of its proper divisors (1).

152340491 is an equidigital number, since it uses as much as digits as its factorization.

152340491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 152340491 is about 12342.6290149222. The cubic root of 152340491 is about 534.0785267489.

The spelling of 152340491 in words is "one hundred fifty-two million, three hundred forty thousand, four hundred ninety-one".