1655560601 has 4 divisors (see below), whose sum is σ = 1655811600. Its totient is φ = 1655309604.

The previous prime is 1655560567. The next prime is 1655560633. The reversal of 1655560601 is 1060655561.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1655560601 - 2⁶ = 1655560537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1655560651) 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 in 3 ways as a sum of consecutive naturals, for example, 115331 + ... + 128888.

It is an arithmetic number, because the mean of its divisors is an integer number (413952900).

Almost surely, 2^1655560601 is an apocalyptic number.

It is an amenable number.

1655560601 is a deficient number, since it is larger than the sum of its proper divisors (250999).

1655560601 is an equidigital number, since it uses as much as digits as its factorization.

1655560601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250998.

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

The square root of 1655560601 is about 40688.5807199022. The cubic root of 1655560601 is about 1182.9916907183.

The spelling of 1655560601 in words is "one billion, six hundred fifty-five million, five hundred sixty thousand, six hundred one".