84750181 has 2 divisors, whose sum is σ = 84750182. Its totient is φ = 84750180.

The previous prime is 84750179. The next prime is 84750227. The reversal of 84750181 is 18105748.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64545156 + 20205025 = 8034^2 + 4495^2 .

It is a cyclic number.

It is not a de Polignac number, because 84750181 - 2¹ = 84750179 is a prime.

It is a super-2 number, since 2×84750181² = 14365186359065522, which contains 22 as substring.

Together with 84750179, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84750121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42375090 + 42375091.

It is an arithmetic number, because the mean of its divisors is an integer number (42375091).

Almost surely, 2^84750181 is an apocalyptic number.

It is an amenable number.

84750181 is a deficient number, since it is larger than the sum of its proper divisors (1).

84750181 is an equidigital number, since it uses as much as digits as its factorization.

84750181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8960, while the sum is 34.

The square root of 84750181 is about 9205.9861503263. The cubic root of 84750181 is about 439.2517948837.

The spelling of 84750181 in words is "eighty-four million, seven hundred fifty thousand, one hundred eighty-one".