154422493 has 2 divisors, whose sum is σ = 154422494. Its totient is φ = 154422492.

The previous prime is 154422491. The next prime is 154422511. The reversal of 154422493 is 394224451.

154422493 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 113998329 + 40424164 = 10677^2 + 6358^2 .

It is a cyclic number.

It is not a de Polignac number, because 154422493 - 2¹ = 154422491 is a prime.

Together with 154422491, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (154422491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77211246 + 77211247.

It is an arithmetic number, because the mean of its divisors is an integer number (77211247).

Almost surely, 2^154422493 is an apocalyptic number.

It is an amenable number.

154422493 is a deficient number, since it is larger than the sum of its proper divisors (1).

154422493 is an equidigital number, since it uses as much as digits as its factorization.

154422493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34560, while the sum is 34.

The square root of 154422493 is about 12426.6847147580. The cubic root of 154422493 is about 536.5005684729.

The spelling of 154422493 in words is "one hundred fifty-four million, four hundred twenty-two thousand, four hundred ninety-three".