155042513 has 2 divisors, whose sum is σ = 155042514. Its totient is φ = 155042512.

The previous prime is 155042507. The next prime is 155042557. The reversal of 155042513 is 315240551.

155042513 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 149989009 + 5053504 = 12247^2 + 2248^2 .

It is a cyclic number.

It is not a de Polignac number, because 155042513 - 2¹⁰ = 155041489 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (155042113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77521256 + 77521257.

It is an arithmetic number, because the mean of its divisors is an integer number (77521257).

Almost surely, 2^155042513 is an apocalyptic number.

It is an amenable number.

155042513 is a deficient number, since it is larger than the sum of its proper divisors (1).

155042513 is an equidigital number, since it uses as much as digits as its factorization.

155042513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 155042513 is about 12451.6068440985. The cubic root of 155042513 is about 537.2176420717.

The spelling of 155042513 in words is "one hundred fifty-five million, forty-two thousand, five hundred thirteen".