654135481 has 2 divisors, whose sum is σ = 654135482. Its totient is φ = 654135480.

The previous prime is 654135437. The next prime is 654135491. The reversal of 654135481 is 184531456.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 404653456 + 249482025 = 20116^2 + 15795^2 .

It is a cyclic number.

It is not a de Polignac number, because 654135481 - 2⁷ = 654135353 is a prime.

It is a super-2 number, since 2×654135481² = 855786455006202722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 654135481.

It is not a weakly prime, because it can be changed into another prime (654135421) 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, 327067740 + 327067741.

It is an arithmetic number, because the mean of its divisors is an integer number (327067741).

Almost surely, 2^654135481 is an apocalyptic number.

It is an amenable number.

654135481 is a deficient number, since it is larger than the sum of its proper divisors (1).

654135481 is an equidigital number, since it uses as much as digits as its factorization.

654135481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 57600, while the sum is 37.

The square root of 654135481 is about 25576.0724310829. The cubic root of 654135481 is about 868.0723078394.

The spelling of 654135481 in words is "six hundred fifty-four million, one hundred thirty-five thousand, four hundred eighty-one".