155829913 has 2 divisors, whose sum is σ = 155829914. Its totient is φ = 155829912.

The previous prime is 155829881. The next prime is 155829917. The reversal of 155829913 is 319928551.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 155825289 + 4624 = 12483^2 + 68^2 .

It is a cyclic number.

It is not a de Polignac number, because 155829913 - 2⁵ = 155829881 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 155829913.

It is not a weakly prime, because it can be changed into another prime (155829917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77914956 + 77914957.

It is an arithmetic number, because the mean of its divisors is an integer number (77914957).

Almost surely, 2^155829913 is an apocalyptic number.

It is an amenable number.

155829913 is a deficient number, since it is larger than the sum of its proper divisors (1).

155829913 is an equidigital number, since it uses as much as digits as its factorization.

155829913 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 97200, while the sum is 43.

The square root of 155829913 is about 12483.1852105142. The cubic root of 155829913 is about 538.1255459415.

The spelling of 155829913 in words is "one hundred fifty-five million, eight hundred twenty-nine thousand, nine hundred thirteen".