2091058 has 4 divisors (see below), whose sum is σ = 3136590. Its totient is φ = 1045528.

The previous prime is 2091053. The next prime is 2091097. The reversal of 2091058 is 8501902.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8501902 = 2 ⋅4250951.

It can be written as a sum of positive squares in only one way, i.e., 1857769 + 233289 = 1363^2 + 483^2 .

It is not an unprimeable number, because it can be changed into a prime (2091053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 522763 + ... + 522766.

2^2091058 is an apocalyptic number.

2091058 is a deficient number, since it is larger than the sum of its proper divisors (1045532).

2091058 is a wasteful number, since it uses less digits than its factorization.

2091058 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1045531.

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 2091058 is about 1446.0491001346. The cubic root of 2091058 is about 127.8758969668.

It can be divided in two parts, 209 and 1058, that multiplied together give a palindrome (221122).

The spelling of 2091058 in words is "two million, ninety-one thousand, fifty-eight".