4097655521 has 2 divisors, whose sum is σ = 4097655522. Its totient is φ = 4097655520.

The previous prime is 4097655517. The next prime is 4097655587. The reversal of 4097655521 is 1255567904.

It is a happy number.

4097655521 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., 3326982400 + 770673121 = 57680^2 + 27761^2 .

It is a cyclic number.

It is not a de Polignac number, because 4097655521 - 2² = 4097655517 is a prime.

It is not a weakly prime, because it can be changed into another prime (4097654521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2048827760 + 2048827761.

It is an arithmetic number, because the mean of its divisors is an integer number (2048827761).

Almost surely, 2^4097655521 is an apocalyptic number.

It is an amenable number.

4097655521 is a deficient number, since it is larger than the sum of its proper divisors (1).

4097655521 is an equidigital number, since it uses as much as digits as its factorization.

4097655521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 378000, while the sum is 44.

The square root of 4097655521 is about 64012.9324511852. The cubic root of 4097655521 is about 1600.2155335947.

The spelling of 4097655521 in words is "four billion, ninety-seven million, six hundred fifty-five thousand, five hundred twenty-one".