2721437 has 2 divisors, whose sum is σ = 2721438. Its totient is φ = 2721436.

The previous prime is 2721431. The next prime is 2721443. The reversal of 2721437 is 7341272.

2721437 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (2721431) and next prime (2721443).

It can be written as a sum of positive squares in only one way, i.e., 1585081 + 1136356 = 1259^2 + 1066^2 .

It is a cyclic number.

It is not a de Polignac number, because 2721437 - 2⁴ = 2721421 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2721431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1360718 + 1360719.

It is an arithmetic number, because the mean of its divisors is an integer number (1360719).

2^2721437 is an apocalyptic number.

It is an amenable number.

2721437 is a deficient number, since it is larger than the sum of its proper divisors (1).

2721437 is an equidigital number, since it uses as much as digits as its factorization.

2721437 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2352, while the sum is 26.

The square root of 2721437 is about 1649.6778473387. The cubic root of 2721437 is about 139.6152189329.

The spelling of 2721437 in words is "two million, seven hundred twenty-one thousand, four hundred thirty-seven".