2155550044 has 12 divisors (see below), whose sum is σ = 3782064384. Its totient is φ = 1074960224.

The previous prime is 2155550027. The next prime is 2155550083. The reversal of 2155550044 is 4400555512.

It is a junction number, because it is equal to n+sod(n) for n = 2155549988 and 2155550015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 701977 + ... + 705040.

It is an arithmetic number, because the mean of its divisors is an integer number (315172032).

Almost surely, 2^2155550044 is an apocalyptic number.

It is an amenable number.

2155550044 is a deficient number, since it is larger than the sum of its proper divisors (1626514340).

2155550044 is a wasteful number, since it uses less digits than its factorization.

2155550044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1407404 (or 1407402 counting only the distinct ones).

The product of its (nonzero) digits is 20000, while the sum is 31.

The square root of 2155550044 is about 46427.9015679150. The cubic root of 2155550044 is about 1291.7725056101.

The spelling of 2155550044 in words is "two billion, one hundred fifty-five million, five hundred fifty thousand, forty-four".