2137881 has 8 divisors (see below), whose sum is σ = 2890944. Its totient is φ = 1405040.

The previous prime is 2137879. The next prime is 2137907. The reversal of 2137881 is 1887312.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2137881 - 2¹ = 2137879 is a prime.

It is a super-2 number, since 2×2137881² = 9141070340322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2137841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4806 + ... + 5231.

It is an arithmetic number, because the mean of its divisors is an integer number (361368).

2^2137881 is an apocalyptic number.

It is an amenable number.

2137881 is a deficient number, since it is larger than the sum of its proper divisors (753063).

2137881 is a wasteful number, since it uses less digits than its factorization.

2137881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10111.

The product of its digits is 2688, while the sum is 30.

The square root of 2137881 is about 1462.1494451663. The cubic root of 2137881 is about 128.8233264402.

The spelling of 2137881 in words is "two million, one hundred thirty-seven thousand, eight hundred eighty-one".