2159137 has 4 divisors (see below), whose sum is σ = 2233620. Its totient is φ = 2084656.

The previous prime is 2159093. The next prime is 2159147. The reversal of 2159137 is 7319512.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 776161 + 1382976 = 881^2 + 1176^2 .

It is a cyclic number.

It is not a de Polignac number, because 2159137 - 2¹⁹ = 1634849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2159147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37198 + ... + 37255.

It is an arithmetic number, because the mean of its divisors is an integer number (558405).

2^2159137 is an apocalyptic number.

It is an amenable number.

2159137 is a deficient number, since it is larger than the sum of its proper divisors (74483).

2159137 is an equidigital number, since it uses as much as digits as its factorization.

2159137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74482.

The product of its digits is 1890, while the sum is 28.

The square root of 2159137 is about 1469.4002177759. The cubic root of 2159137 is about 129.2488635796.

The spelling of 2159137 in words is "two million, one hundred fifty-nine thousand, one hundred thirty-seven".