2151137 has 2 divisors, whose sum is σ = 2151138. Its totient is φ = 2151136.

The previous prime is 2151119. The next prime is 2151139. The reversal of 2151137 is 7311512.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1752976 + 398161 = 1324^2 + 631^2 .

It is a cyclic number.

It is not a de Polignac number, because 2151137 - 2⁶ = 2151073 is a prime.

Together with 2151139, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2151139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1075568 + 1075569.

It is an arithmetic number, because the mean of its divisors is an integer number (1075569).

2^2151137 is an apocalyptic number.

It is an amenable number.

2151137 is a deficient number, since it is larger than the sum of its proper divisors (1).

2151137 is an equidigital number, since it uses as much as digits as its factorization.

2151137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 210, while the sum is 20.

The square root of 2151137 is about 1466.6754923977. The cubic root of 2151137 is about 129.0890357431.

Adding to 2151137 its reverse (7311512), we get a palindrome (9462649).

The spelling of 2151137 in words is "two million, one hundred fifty-one thousand, one hundred thirty-seven".