2134549 has 2 divisors, whose sum is σ = 2134550. Its totient is φ = 2134548.

The previous prime is 2134529. The next prime is 2134579. The reversal of 2134549 is 9454312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1306449 + 828100 = 1143^2 + 910^2 .

It is a cyclic number.

It is not a de Polignac number, because 2134549 - 2²¹ = 37397 is a prime.

It is a Chen prime.

2134549 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2134519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1067274 + 1067275.

It is an arithmetic number, because the mean of its divisors is an integer number (1067275).

2^2134549 is an apocalyptic number.

It is an amenable number.

2134549 is a deficient number, since it is larger than the sum of its proper divisors (1).

2134549 is an equidigital number, since it uses as much as digits as its factorization.

2134549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 28.

The square root of 2134549 is about 1461.0095824463. The cubic root of 2134549 is about 128.7563656638.

Subtracting from 2134549 its sum of digits (28), we obtain a square (2134521 = 1461²).

The spelling of 2134549 in words is "two million, one hundred thirty-four thousand, five hundred forty-nine".