2027491 has 4 divisors (see below), whose sum is σ = 2076984. Its totient is φ = 1978000.

The previous prime is 2027461. The next prime is 2027497. The reversal of 2027491 is 1947202.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2027491 is a prime.

It is a super-2 number, since 2×2027491² = 8221439510162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2027497) 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, 24685 + ... + 24766.

It is an arithmetic number, because the mean of its divisors is an integer number (519246).

2^2027491 is an apocalyptic number.

2027491 is a deficient number, since it is larger than the sum of its proper divisors (49493).

2027491 is an equidigital number, since it uses as much as digits as its factorization.

2027491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49492.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 2027491 is about 1423.8999262589. The cubic root of 2027491 is about 126.5667548537.

The spelling of 2027491 in words is "two million, twenty-seven thousand, four hundred ninety-one".