2055890 has 8 divisors (see below), whose sum is σ = 3700620. Its totient is φ = 822352.

The previous prime is 2055853. The next prime is 2055917. The reversal of 2055890 is 985502.

It can be written as a sum of positive squares in 2 ways, for example, as 2053489 + 2401 = 1433^2 + 49^2 .

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

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, 102785 + ... + 102804.

2^2055890 is an apocalyptic number.

2055890 is a deficient number, since it is larger than the sum of its proper divisors (1644730).

2055890 is a wasteful number, since it uses less digits than its factorization.

2055890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205596.

The product of its (nonzero) digits is 3600, while the sum is 29.

The square root of 2055890 is about 1433.8375082275. The cubic root of 2055890 is about 127.1549558346.

The spelling of 2055890 in words is "two million, fifty-five thousand, eight hundred ninety".