1655055011 has 4 divisors (see below), whose sum is σ = 1655880024. Its totient is φ = 1654230000.

The previous prime is 1655054981. The next prime is 1655055013. The reversal of 1655055011 is 1105505561.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1105505561 = 67 ⋅16500083.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1655055011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1655055013) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 409490 + ... + 413511.

It is an arithmetic number, because the mean of its divisors is an integer number (413970006).

Almost surely, 2^1655055011 is an apocalyptic number.

1655055011 is a deficient number, since it is larger than the sum of its proper divisors (825013).

1655055011 is an equidigital number, since it uses as much as digits as its factorization.

1655055011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 825012.

The product of its (nonzero) digits is 3750, while the sum is 29.

The square root of 1655055011 is about 40682.3673229570. The cubic root of 1655055011 is about 1182.8712542401.

The spelling of 1655055011 in words is "one billion, six hundred fifty-five million, fifty-five thousand, eleven".