154422013 has 4 divisors (see below), whose sum is σ = 159746940. Its totient is φ = 149097088.

The previous prime is 154422007. The next prime is 154422017. The reversal of 154422013 is 310224451.

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

It can be written as a sum of positive squares in 2 ways, for example, as 115820644 + 38601369 = 10762^2 + 6213^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-154422013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154422017) 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, 2662420 + ... + 2662477.

It is an arithmetic number, because the mean of its divisors is an integer number (39936735).

Almost surely, 2^154422013 is an apocalyptic number.

It is an amenable number.

154422013 is a deficient number, since it is larger than the sum of its proper divisors (5324927).

154422013 is an equidigital number, since it uses as much as digits as its factorization.

154422013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5324926.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 154422013 is about 12426.6654014663. The cubic root of 154422013 is about 536.5000125941.

Adding to 154422013 its reverse (310224451), we get a palindrome (464646464).

The spelling of 154422013 in words is "one hundred fifty-four million, four hundred twenty-two thousand, thirteen".