145255105 has 4 divisors (see below), whose sum is σ = 174306132. Its totient is φ = 116204080.

The previous prime is 145255093. The next prime is 145255111. The reversal of 145255105 is 501552541.

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

It can be written as a sum of positive squares in 2 ways, for example, as 111661489 + 33593616 = 10567^2 + 5796^2 .

It is not a de Polignac number, because 145255105 - 2⁵ = 145255073 is a prime.

It is a super-2 number, since 2×145255105² = 42198091057122050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 14525506 + ... + 14525515.

It is an arithmetic number, because the mean of its divisors is an integer number (43576533).

Almost surely, 2^145255105 is an apocalyptic number.

It is an amenable number.

145255105 is a deficient number, since it is larger than the sum of its proper divisors (29051027).

145255105 is an equidigital number, since it uses as much as digits as its factorization.

145255105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29051026.

The product of its (nonzero) digits is 5000, while the sum is 28.

The square root of 145255105 is about 12052.1825824205. The cubic root of 145255105 is about 525.6667024985. Note that the first 3 decimals are identical.

The spelling of 145255105 in words is "one hundred forty-five million, two hundred fifty-five thousand, one hundred five".