145227 has 4 divisors (see below), whose sum is σ = 193640. Its totient is φ = 96816.

The previous prime is 145219. The next prime is 145253. The reversal of 145227 is 722541.

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

It is not a de Polignac number, because 145227 - 2³ = 145219 is a prime.

It is an Ulam number.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145207) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24202 + ... + 24207.

It is an arithmetic number, because the mean of its divisors is an integer number (48410).

2¹⁴⁵²²⁷ is an apocalyptic number.

145227 is a deficient number, since it is larger than the sum of its proper divisors (48413).

145227 is an equidigital number, since it uses as much as digits as its factorization.

145227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48412.

The product of its digits is 560, while the sum is 21.

The square root of 145227 is about 381.0866043303. The cubic root of 145227 is about 52.5632797056.

Adding to 145227 its reverse (722541), we get a palindrome (867768).

It can be divided in two parts, 1452 and 27, that multiplied together give a square (39204 = 198²).

The spelling of 145227 in words is "one hundred forty-five thousand, two hundred twenty-seven".