1655520055 has 8 divisors (see below), whose sum is σ = 2270427552. Its totient is φ = 1135213728.

The previous prime is 1655520047. The next prime is 1655520067. The reversal of 1655520055 is 5500255561.

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 1655520055 - 2³ = 1655520047 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1655520055.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23650252 + ... + 23650321.

It is an arithmetic number, because the mean of its divisors is an integer number (283803444).

Almost surely, 2^1655520055 is an apocalyptic number.

1655520055 is a deficient number, since it is larger than the sum of its proper divisors (614907497).

1655520055 is an equidigital number, since it uses as much as digits as its factorization.

1655520055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47300585.

The product of its (nonzero) digits is 37500, while the sum is 34.

The square root of 1655520055 is about 40688.0824689491. The cubic root of 1655520055 is about 1182.9820331693.

The spelling of 1655520055 in words is "one billion, six hundred fifty-five million, five hundred twenty thousand, fifty-five".