2545919 has 2 divisors, whose sum is σ = 2545920. Its totient is φ = 2545918.

The previous prime is 2545891. The next prime is 2545927. The reversal of 2545919 is 9195452.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2545919 - 2¹⁶ = 2480383 is a prime.

It is a super-2 number, since 2×2545919² = 12963407109122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2545519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1272959 + 1272960.

It is an arithmetic number, because the mean of its divisors is an integer number (1272960).

2^2545919 is an apocalyptic number.

2545919 is a deficient number, since it is larger than the sum of its proper divisors (1).

2545919 is an equidigital number, since it uses as much as digits as its factorization.

2545919 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 2545919 is about 1595.5936199421. The cubic root of 2545919 is about 136.5468001805.

The spelling of 2545919 in words is "two million, five hundred forty-five thousand, nine hundred nineteen".