155329145 has 8 divisors (see below), whose sum is σ = 191432904. Its totient is φ = 120904704.

The previous prime is 155329103. The next prime is 155329147. The reversal of 155329145 is 541923551.

It can be written as a sum of positive squares in 4 ways, for example, as 5707321 + 149621824 = 2389^2 + 12232^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 155329145 - 2¹⁴ = 155312761 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (155329147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 419624 + ... + 419993.

It is an arithmetic number, because the mean of its divisors is an integer number (23929113).

Almost surely, 2^155329145 is an apocalyptic number.

It is an amenable number.

155329145 is a deficient number, since it is larger than the sum of its proper divisors (36103759).

155329145 is an equidigital number, since it uses as much as digits as its factorization.

155329145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 839659.

The product of its digits is 27000, while the sum is 35.

The square root of 155329145 is about 12463.1113691566. Note that the first 3 decimals coincide. The cubic root of 155329145 is about 537.5484953540.

The spelling of 155329145 in words is "one hundred fifty-five million, three hundred twenty-nine thousand, one hundred forty-five".