155345429 has 2 divisors, whose sum is σ = 155345430. Its totient is φ = 155345428.

The previous prime is 155345413. The next prime is 155345447. The reversal of 155345429 is 924543551.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 103836100 + 51509329 = 10190^2 + 7177^2 .

It is an emirp because it is prime and its reverse (924543551) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 155345429 - 2⁴ = 155345413 is a prime.

It is a super-2 number, since 2×155345429² = 48264404622388082, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 155345392 and 155345401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155345479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77672714 + 77672715.

It is an arithmetic number, because the mean of its divisors is an integer number (77672715).

Almost surely, 2^155345429 is an apocalyptic number.

It is an amenable number.

155345429 is a deficient number, since it is larger than the sum of its proper divisors (1).

155345429 is an equidigital number, since it uses as much as digits as its factorization.

155345429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108000, while the sum is 38.

The square root of 155345429 is about 12463.7646399473. The cubic root of 155345429 is about 537.5672794095.

The spelling of 155345429 in words is "one hundred fifty-five million, three hundred forty-five thousand, four hundred twenty-nine".