155430413 has 2 divisors, whose sum is σ = 155430414. Its totient is φ = 155430412.

The previous prime is 155430409. The next prime is 155430437. The reversal of 155430413 is 314034551.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 118439689 + 36990724 = 10883^2 + 6082^2 .

It is a cyclic number.

It is not a de Polignac number, because 155430413 - 2² = 155430409 is a prime.

It is a super-2 number, since 2×155430413² = 48317226570701138, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155430463) 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, 77715206 + 77715207.

It is an arithmetic number, because the mean of its divisors is an integer number (77715207).

Almost surely, 2^155430413 is an apocalyptic number.

It is an amenable number.

155430413 is a deficient number, since it is larger than the sum of its proper divisors (1).

155430413 is an equidigital number, since it uses as much as digits as its factorization.

155430413 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 155430413 is about 12467.1734166169. The cubic root of 155430413 is about 537.6652895659.

Adding to 155430413 its reverse (314034551), we get a palindrome (469464964).

The spelling of 155430413 in words is "one hundred fifty-five million, four hundred thirty thousand, four hundred thirteen".