154542013 has 2 divisors, whose sum is σ = 154542014. Its totient is φ = 154542012.

The previous prime is 154541993. The next prime is 154542103. The reversal of 154542013 is 310245451.

It is a happy number.

Together with next prime (154542103) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 81234169 + 73307844 = 9013^2 + 8562^2 .

It is a cyclic number.

It is not a de Polignac number, because 154542013 - 2⁹ = 154541501 is a prime.

It is a super-4 number, since 4×154542013⁴ (a number of 34 digits) contains 4444 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (154542613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77271006 + 77271007.

It is an arithmetic number, because the mean of its divisors is an integer number (77271007).

Almost surely, 2^154542013 is an apocalyptic number.

It is an amenable number.

154542013 is a deficient number, since it is larger than the sum of its proper divisors (1).

154542013 is an equidigital number, since it uses as much as digits as its factorization.

154542013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 154542013 is about 12431.4927904898. The cubic root of 154542013 is about 536.6389464397.

Adding to 154542013 its reverse (310245451), we get a palindrome (464787464).

The spelling of 154542013 in words is "one hundred fifty-four million, five hundred forty-two thousand, thirteen".