145213 has 2 divisors, whose sum is σ = 145214. Its totient is φ = 145212.

The previous prime is 145207. The next prime is 145219. The reversal of 145213 is 312541.

It is a balanced prime because it is at equal distance from previous prime (145207) and next prime (145219).

It can be written as a sum of positive squares in only one way, i.e., 139129 + 6084 = 373^2 + 78^2 .

It is a cyclic number.

It is not a de Polignac number, because 145213 - 2⁹ = 144701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145219) 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 as a sum of consecutive naturals, namely, 72606 + 72607.

It is an arithmetic number, because the mean of its divisors is an integer number (72607).

2¹⁴⁵²¹³ is an apocalyptic number.

It is an amenable number.

145213 is a deficient number, since it is larger than the sum of its proper divisors (1).

145213 is an equidigital number, since it uses as much as digits as its factorization.

145213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120, while the sum is 16.

The square root of 145213 is about 381.0682353595. The cubic root of 145213 is about 52.5615906038.

Adding to 145213 its reverse (312541), we get a palindrome (457754).

The spelling of 145213 in words is "one hundred forty-five thousand, two hundred thirteen".