155144251 has 2 divisors, whose sum is σ = 155144252. Its totient is φ = 155144250.

The previous prime is 155144239. The next prime is 155144263. The reversal of 155144251 is 152441551.

It is a balanced prime because it is at equal distance from previous prime (155144239) and next prime (155144263).

It is a cyclic number.

It is not a de Polignac number, because 155144251 - 2⁹ = 155143739 is a prime.

It is not a weakly prime, because it can be changed into another prime (155144051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77572125 + 77572126.

It is an arithmetic number, because the mean of its divisors is an integer number (77572126).

Almost surely, 2^155144251 is an apocalyptic number.

155144251 is a deficient number, since it is larger than the sum of its proper divisors (1).

155144251 is an equidigital number, since it uses as much as digits as its factorization.

155144251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4000, while the sum is 28.

The square root of 155144251 is about 12455.6915103097. The cubic root of 155144251 is about 537.3351227483.

The spelling of 155144251 in words is "one hundred fifty-five million, one hundred forty-four thousand, two hundred fifty-one".