2054991 has 8 divisors (see below), whose sum is σ = 2746800. Its totient is φ = 1366592.

The previous prime is 2054989. The next prime is 2054999. The reversal of 2054991 is 1994502.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2054991 - 2¹ = 2054989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2054999) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1435 + ... + 2483.

It is an arithmetic number, because the mean of its divisors is an integer number (343350).

2^2054991 is an apocalyptic number.

2054991 is a deficient number, since it is larger than the sum of its proper divisors (691809).

2054991 is a wasteful number, since it uses less digits than its factorization.

2054991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1705.

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 2054991 is about 1433.5239795692. The cubic root of 2054991 is about 127.1364190174.

The spelling of 2054991 in words is "two million, fifty-four thousand, nine hundred ninety-one".