145019027 has 4 divisors (see below), whose sum is σ = 153549576. Its totient is φ = 136488480.

The previous prime is 145018997. The next prime is 145019047. The reversal of 145019027 is 720910541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 720910541 = 13 ⋅55454657.

It is a cyclic number.

It is not a de Polignac number, because 145019027 - 2⁸ = 145018771 is a prime.

It is not an unprimeable number, because it can be changed into a prime (145019047) 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 3 ways as a sum of consecutive naturals, for example, 4265249 + ... + 4265282.

It is an arithmetic number, because the mean of its divisors is an integer number (38387394).

Almost surely, 2^145019027 is an apocalyptic number.

145019027 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

145019027 is a deficient number, since it is larger than the sum of its proper divisors (8530549).

145019027 is an equidigital number, since it uses as much as digits as its factorization.

145019027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8530548.

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 145019027 is about 12042.3846060488. The cubic root of 145019027 is about 525.3817655584.

Adding to 145019027 its reverse (720910541), we get a palindrome (865929568).

The spelling of 145019027 in words is "one hundred forty-five million, nineteen thousand, twenty-seven".