2550181 has 2 divisors, whose sum is σ = 2550182. Its totient is φ = 2550180.

The previous prime is 2550179. The next prime is 2550203. The reversal of 2550181 is 1810552.

It is an a-pointer prime, because the next prime (2550203) can be obtained adding 2550181 to its sum of digits (22).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2265025 + 285156 = 1505^2 + 534^2 .

It is a cyclic number.

It is not a de Polignac number, because 2550181 - 2¹ = 2550179 is a prime.

It is a super-2 number, since 2×2550181² = 13006846265522, which contains 22 as substring.

Together with 2550179, it forms a pair of twin primes.

It is a Chen prime.

2550181 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2550101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1275090 + 1275091.

It is an arithmetic number, because the mean of its divisors is an integer number (1275091).

2^2550181 is an apocalyptic number.

It is an amenable number.

2550181 is a deficient number, since it is larger than the sum of its proper divisors (1).

2550181 is an equidigital number, since it uses as much as digits as its factorization.

2550181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 400, while the sum is 22.

The square root of 2550181 is about 1596.9286145598. The cubic root of 2550181 is about 136.6229531687.

The spelling of 2550181 in words is "two million, five hundred fifty thousand, one hundred eighty-one".