155151313 has 2 divisors, whose sum is σ = 155151314. Its totient is φ = 155151312.

The previous prime is 155151281. The next prime is 155151331. The reversal of 155151313 is 313151551.

It is a happy number.

Together with next prime (155151331) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 90782784 + 64368529 = 9528^2 + 8023^2 .

It is a cyclic number.

It is not a de Polignac number, because 155151313 - 2⁵ = 155151281 is a prime.

It is not a weakly prime, because it can be changed into another prime (155151013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77575656 + 77575657.

It is an arithmetic number, because the mean of its divisors is an integer number (77575657).

Almost surely, 2^155151313 is an apocalyptic number.

It is an amenable number.

155151313 is a deficient number, since it is larger than the sum of its proper divisors (1).

155151313 is an equidigital number, since it uses as much as digits as its factorization.

155151313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1125, while the sum is 25.

The square root of 155151313 is about 12455.9749919466. The cubic root of 155151313 is about 537.3432755975.

The spelling of 155151313 in words is "one hundred fifty-five million, one hundred fifty-one thousand, three hundred thirteen".