153240251 has 2 divisors, whose sum is σ = 153240252. Its totient is φ = 153240250.

The previous prime is 153240203. The next prime is 153240253. The reversal of 153240251 is 152042351.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 153240251 - 2¹⁴ = 153223867 is a prime.

Together with 153240253, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (153240253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76620125 + 76620126.

It is an arithmetic number, because the mean of its divisors is an integer number (76620126).

Almost surely, 2^153240251 is an apocalyptic number.

153240251 is a deficient number, since it is larger than the sum of its proper divisors (1).

153240251 is an equidigital number, since it uses as much as digits as its factorization.

153240251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 153240251 is about 12379.0246384762. The cubic root of 153240251 is about 535.1279293453.

The spelling of 153240251 in words is "one hundred fifty-three million, two hundred forty thousand, two hundred fifty-one".