154113481 has 2 divisors, whose sum is σ = 154113482. Its totient is φ = 154113480.

The previous prime is 154113397. The next prime is 154113497. The reversal of 154113481 is 184311451.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 131882256 + 22231225 = 11484^2 + 4715^2 .

It is an emirp because it is prime and its reverse (184311451) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 154113481 - 2⁷ = 154113353 is a prime.

It is a super-2 number, since 2×154113481² = 47501930051874722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (154113881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77056740 + 77056741.

It is an arithmetic number, because the mean of its divisors is an integer number (77056741).

Almost surely, 2^154113481 is an apocalyptic number.

It is an amenable number.

154113481 is a deficient number, since it is larger than the sum of its proper divisors (1).

154113481 is an equidigital number, since it uses as much as digits as its factorization.

154113481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1920, while the sum is 28.

The square root of 154113481 is about 12414.2450837737. The cubic root of 154113481 is about 536.1424690434.

The spelling of 154113481 in words is "one hundred fifty-four million, one hundred thirteen thousand, four hundred eighty-one".