345545129 has 2 divisors, whose sum is σ = 345545130. Its totient is φ = 345545128.

The previous prime is 345545113. The next prime is 345545173. The reversal of 345545129 is 921545543.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 311346025 + 34199104 = 17645^2 + 5848^2 .

It is a cyclic number.

It is not a de Polignac number, because 345545129 - 2⁴ = 345545113 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 345545092 and 345545101.

It is not a weakly prime, because it can be changed into another prime (345545329) 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, 172772564 + 172772565.

It is an arithmetic number, because the mean of its divisors is an integer number (172772565).

Almost surely, 2^345545129 is an apocalyptic number.

It is an amenable number.

345545129 is a deficient number, since it is larger than the sum of its proper divisors (1).

345545129 is an equidigital number, since it uses as much as digits as its factorization.

345545129 is an odious number, because the sum of its binary digits is odd.

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

The square root of 345545129 is about 18588.8442082879. The cubic root of 345545129 is about 701.7271154421.

It can be divided in two parts, 3455 and 45129, that added together give a palindrome (48584).

The spelling of 345545129 in words is "three hundred forty-five million, five hundred forty-five thousand, one hundred twenty-nine".