145214813 has 2 divisors, whose sum is σ = 145214814. Its totient is φ = 145214812.

The previous prime is 145214789. The next prime is 145214837. The reversal of 145214813 is 318412541.

It is a balanced prime because it is at equal distance from previous prime (145214789) and next prime (145214837).

It can be written as a sum of positive squares in only one way, i.e., 141443449 + 3771364 = 11893^2 + 1942^2 .

It is a cyclic number.

It is not a de Polignac number, because 145214813 - 2⁶ = 145214749 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145214843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72607406 + 72607407.

It is an arithmetic number, because the mean of its divisors is an integer number (72607407).

Almost surely, 2^145214813 is an apocalyptic number.

It is an amenable number.

145214813 is a deficient number, since it is larger than the sum of its proper divisors (1).

145214813 is an equidigital number, since it uses as much as digits as its factorization.

145214813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3840, while the sum is 29.

The square root of 145214813 is about 12050.5109020323. The cubic root of 145214813 is about 525.6180934864.

The spelling of 145214813 in words is "one hundred forty-five million, two hundred fourteen thousand, eight hundred thirteen".