2155137 has 4 divisors (see below), whose sum is σ = 2873520. Its totient is φ = 1436756.

The previous prime is 2155133. The next prime is 2155159. The reversal of 2155137 is 7315512.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2155137 - 2² = 2155133 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (2155133) 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 in 3 ways as a sum of consecutive naturals, for example, 359187 + ... + 359192.

It is an arithmetic number, because the mean of its divisors is an integer number (718380).

2^2155137 is an apocalyptic number.

It is an amenable number.

2155137 is a deficient number, since it is larger than the sum of its proper divisors (718383).

2155137 is an equidigital number, since it uses as much as digits as its factorization.

2155137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 718382.

The product of its digits is 1050, while the sum is 24.

The square root of 2155137 is about 1468.0384872339. The cubic root of 2155137 is about 129.1689991023.

The spelling of 2155137 in words is "two million, one hundred fifty-five thousand, one hundred thirty-seven".