154442213 has 2 divisors, whose sum is σ = 154442214. Its totient is φ = 154442212.

The previous prime is 154442173. The next prime is 154442219. The reversal of 154442213 is 312244451.

154442213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 133217764 + 21224449 = 11542^2 + 4607^2 .

It is an emirp because it is prime and its reverse (312244451) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 154442213 - 2⁶ = 154442149 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (154442219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77221106 + 77221107.

It is an arithmetic number, because the mean of its divisors is an integer number (77221107).

Almost surely, 2^154442213 is an apocalyptic number.

It is an amenable number.

154442213 is a deficient number, since it is larger than the sum of its proper divisors (1).

154442213 is an equidigital number, since it uses as much as digits as its factorization.

154442213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3840, while the sum is 26.

The square root of 154442213 is about 12427.4781432115. The cubic root of 154442213 is about 536.5234048285.

Adding to 154442213 its reverse (312244451), we get a palindrome (466686664).

The spelling of 154442213 in words is "one hundred fifty-four million, four hundred forty-two thousand, two hundred thirteen".