655561545 has 16 divisors (see below), whose sum is σ = 1054762560. Its totient is φ = 347678144.

The previous prime is 655561483. The next prime is 655561601. The reversal of 655561545 is 545165556.

It is not a de Polignac number, because 655561545 - 2⁶ = 655561481 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 655561497 and 655561506.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119394 + ... + 124763.

It is an arithmetic number, because the mean of its divisors is an integer number (65922660).

Almost surely, 2^655561545 is an apocalyptic number.

It is an amenable number.

655561545 is a deficient number, since it is larger than the sum of its proper divisors (399201015).

655561545 is a wasteful number, since it uses less digits than its factorization.

655561545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244344.

The product of its digits is 450000, while the sum is 42.

The square root of 655561545 is about 25603.9361231823. The cubic root of 655561545 is about 868.7026707131.

The spelling of 655561545 in words is "six hundred fifty-five million, five hundred sixty-one thousand, five hundred forty-five".