1655555545 has 8 divisors (see below), whose sum is σ = 2270476224. Its totient is φ = 1135238064.

The previous prime is 1655555543. The next prime is 1655555563. The reversal of 1655555545 is 5455555561.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1655555545 - 2¹ = 1655555543 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1655555495 and 1655555504.

It is not an unprimeable number, because it can be changed into a prime (1655555543) 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 7 ways as a sum of consecutive naturals, for example, 23650759 + ... + 23650828.

It is an arithmetic number, because the mean of its divisors is an integer number (283809528).

Almost surely, 2^1655555545 is an apocalyptic number.

It is an amenable number.

1655555545 is a deficient number, since it is larger than the sum of its proper divisors (614920679).

1655555545 is an equidigital number, since it uses as much as digits as its factorization.

1655555545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47301599.

The product of its digits is 1875000, while the sum is 46.

The square root of 1655555545 is about 40688.5185894006. The cubic root of 1655555545 is about 1182.9904864511.

The spelling of 1655555545 in words is "one billion, six hundred fifty-five million, five hundred fifty-five thousand, five hundred forty-five".