153240181 has 2 divisors, whose sum is σ = 153240182. Its totient is φ = 153240180.

The previous prime is 153240179. The next prime is 153240203. The reversal of 153240181 is 181042351.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 107122500 + 46117681 = 10350^2 + 6791^2 .

It is a cyclic number.

It is not a de Polignac number, because 153240181 - 2¹ = 153240179 is a prime.

It is a super-2 number, since 2×153240181² = 46965106145825522, which contains 22 as substring.

Together with 153240179, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (153240281) 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, 76620090 + 76620091.

It is an arithmetic number, because the mean of its divisors is an integer number (76620091).

Almost surely, 2^153240181 is an apocalyptic number.

It is an amenable number.

153240181 is a deficient number, since it is larger than the sum of its proper divisors (1).

153240181 is an equidigital number, since it uses as much as digits as its factorization.

153240181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 153240181 is about 12379.0218111125. The cubic root of 153240181 is about 535.1278478634.

The spelling of 153240181 in words is "one hundred fifty-three million, two hundred forty thousand, one hundred eighty-one".