2137961 has 4 divisors (see below), whose sum is σ = 2443392. Its totient is φ = 1832532.

The previous prime is 2137957. The next prime is 2137963. The reversal of 2137961 is 1697312.

2137961 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2137961 - 2² = 2137957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2137963) 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 in 3 ways as a sum of consecutive naturals, for example, 152705 + ... + 152718.

It is an arithmetic number, because the mean of its divisors is an integer number (610848).

2^2137961 is an apocalyptic number.

It is an amenable number.

2137961 is a deficient number, since it is larger than the sum of its proper divisors (305431).

2137961 is an equidigital number, since it uses as much as digits as its factorization.

2137961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305430.

The product of its digits is 2268, while the sum is 29.

The square root of 2137961 is about 1462.1768018950. The cubic root of 2137961 is about 128.8249332863.

The spelling of 2137961 in words is "two million, one hundred thirty-seven thousand, nine hundred sixty-one".