2174981 has 2 divisors, whose sum is σ = 2174982. Its totient is φ = 2174980.

The previous prime is 2174951. The next prime is 2174999. The reversal of 2174981 is 1894712.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1934881 + 240100 = 1391^2 + 490^2 .

It is a cyclic number.

It is not a de Polignac number, because 2174981 - 2¹⁰ = 2173957 is a prime.

It is a super-2 number, since 2×2174981² = 9461084700722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2174941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1087490 + 1087491.

It is an arithmetic number, because the mean of its divisors is an integer number (1087491).

2^2174981 is an apocalyptic number.

It is an amenable number.

2174981 is a deficient number, since it is larger than the sum of its proper divisors (1).

2174981 is an equidigital number, since it uses as much as digits as its factorization.

2174981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4032, while the sum is 32.

The square root of 2174981 is about 1474.7816787579. The cubic root of 2174981 is about 129.5642411696.

The spelling of 2174981 in words is "two million, one hundred seventy-four thousand, nine hundred eighty-one".