1655656001 has 2 divisors, whose sum is σ = 1655656002. Its totient is φ = 1655656000.

The previous prime is 1655655997. The next prime is 1655656019. The reversal of 1655656001 is 1006565561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1283358976 + 372297025 = 35824^2 + 19295^2 .

It is a cyclic number.

It is not a de Polignac number, because 1655656001 - 2² = 1655655997 is a prime.

It is not a weakly prime, because it can be changed into another prime (1655656601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 827828000 + 827828001.

It is an arithmetic number, because the mean of its divisors is an integer number (827828001).

Almost surely, 2^1655656001 is an apocalyptic number.

It is an amenable number.

1655656001 is a deficient number, since it is larger than the sum of its proper divisors (1).

1655656001 is an equidigital number, since it uses as much as digits as its factorization.

1655656001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27000, while the sum is 35.

The square root of 1655656001 is about 40689.7530221062. The cubic root of 1655656001 is about 1183.0144131805.

The spelling of 1655656001 in words is "one billion, six hundred fifty-five million, six hundred fifty-six thousand, one".