2180051 has 2 divisors, whose sum is σ = 2180052. Its totient is φ = 2180050.

The previous prime is 2180039. The next prime is 2180071. The reversal of 2180051 is 1500812.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2180051 is a prime.

It is a super-4 number, since 4×2180051⁴ (a number of 26 digits) contains 4444 as substring.

It is a Chen prime.

It is equal to p₁₆₁₃₂₄ and since 2180051 and 161324 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (2180021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1090025 + 1090026.

It is an arithmetic number, because the mean of its divisors is an integer number (1090026).

2^2180051 is an apocalyptic number.

2180051 is a deficient number, since it is larger than the sum of its proper divisors (1).

2180051 is an equidigital number, since it uses as much as digits as its factorization.

2180051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 2180051 is about 1476.4995767016. The cubic root of 2180051 is about 129.6648368295.

Adding to 2180051 its reverse (1500812), we get a palindrome (3680863).

The spelling of 2180051 in words is "two million, one hundred eighty thousand, fifty-one".