145434155 has 4 divisors (see below), whose sum is σ = 174520992. Its totient is φ = 116347320.

The previous prime is 145434143. The next prime is 145434193. The reversal of 145434155 is 551434541.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 145434155 - 2¹² = 145430059 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 14543411 + ... + 14543420.

It is an arithmetic number, because the mean of its divisors is an integer number (43630248).

Almost surely, 2^145434155 is an apocalyptic number.

145434155 is a deficient number, since it is larger than the sum of its proper divisors (29086837).

145434155 is an equidigital number, since it uses as much as digits as its factorization.

145434155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29086836.

The product of its digits is 24000, while the sum is 32.

The square root of 145434155 is about 12059.6084098946. The cubic root of 145434155 is about 525.8826030610.

Adding to 145434155 its reverse (551434541), we get a palindrome (696868696).

The spelling of 145434155 in words is "one hundred forty-five million, four hundred thirty-four thousand, one hundred fifty-five".