155148913 has 2 divisors, whose sum is σ = 155148914. Its totient is φ = 155148912.

The previous prime is 155148907. The next prime is 155148941. The reversal of 155148913 is 319841551.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 127983969 + 27164944 = 11313^2 + 5212^2 .

It is a cyclic number.

It is not a de Polignac number, because 155148913 - 2⁹ = 155148401 is a prime.

It is not a weakly prime, because it can be changed into another prime (155148943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77574456 + 77574457.

It is an arithmetic number, because the mean of its divisors is an integer number (77574457).

Almost surely, 2^155148913 is an apocalyptic number.

It is an amenable number.

155148913 is a deficient number, since it is larger than the sum of its proper divisors (1).

155148913 is an equidigital number, since it uses as much as digits as its factorization.

155148913 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21600, while the sum is 37.

The square root of 155148913 is about 12455.8786522670. The cubic root of 155148913 is about 537.3405049033.

The spelling of 155148913 in words is "one hundred fifty-five million, one hundred forty-eight thousand, nine hundred thirteen".