2554991 has 2 divisors, whose sum is σ = 2554992. Its totient is φ = 2554990.

The previous prime is 2554973. The next prime is 2555009. The reversal of 2554991 is 1994552.

It is a balanced prime because it is at equal distance from previous prime (2554973) and next prime (2555009).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2554991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2554921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1277495 + 1277496.

It is an arithmetic number, because the mean of its divisors is an integer number (1277496).

2^2554991 is an apocalyptic number.

2554991 is a deficient number, since it is larger than the sum of its proper divisors (1).

2554991 is an equidigital number, since it uses as much as digits as its factorization.

2554991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16200, while the sum is 35.

The square root of 2554991 is about 1598.4339210615. The cubic root of 2554991 is about 136.7087959218.

The spelling of 2554991 in words is "two million, five hundred fifty-four thousand, nine hundred ninety-one".