2055561143 has 4 divisors (see below), whose sum is σ = 2055720480. Its totient is φ = 2055401808.

The previous prime is 2055561133. The next prime is 2055561163. The reversal of 2055561143 is 3411655502.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2055561143 - 2⁴ = 2055561127 is a prime.

It is a super-2 number, since 2×2055561143² = 8450663225222932898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2055561133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58430 + ... + 86747.

It is an arithmetic number, because the mean of its divisors is an integer number (513930120).

Almost surely, 2^2055561143 is an apocalyptic number.

2055561143 is a deficient number, since it is larger than the sum of its proper divisors (159337).

2055561143 is a wasteful number, since it uses less digits than its factorization.

2055561143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159336.

The product of its (nonzero) digits is 18000, while the sum is 32.

The square root of 2055561143 is about 45338.2966486391. The cubic root of 2055561143 is about 1271.4817563609.

The spelling of 2055561143 in words is "two billion, fifty-five million, five hundred sixty-one thousand, one hundred forty-three".