2215537 has 2 divisors, whose sum is σ = 2215538. Its totient is φ = 2215536.

The previous prime is 2215531. The next prime is 2215541. The reversal of 2215537 is 7355122.

2215537 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1115136 + 1100401 = 1056^2 + 1049^2 .

It is a cyclic number.

It is not a de Polignac number, because 2215537 - 2³ = 2215529 is a prime.

It is a d-powerful number, because it can be written as 2¹² + 2¹⁶ + 1 + 5⁶ + 5⁹ + 3¹¹ + 7 .

2215537 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (2215531) 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, 1107768 + 1107769.

It is an arithmetic number, because the mean of its divisors is an integer number (1107769).

2^2215537 is an apocalyptic number.

It is an amenable number.

2215537 is a deficient number, since it is larger than the sum of its proper divisors (1).

2215537 is an equidigital number, since it uses as much as digits as its factorization.

2215537 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2100, while the sum is 25.

The square root of 2215537 is about 1488.4680043588. The cubic root of 2215537 is about 130.3645977954.

The spelling of 2215537 in words is "two million, two hundred fifteen thousand, five hundred thirty-seven".