90034181 has 2 divisors, whose sum is σ = 90034182. Its totient is φ = 90034180.

The previous prime is 90034171. The next prime is 90034253. The reversal of 90034181 is 18143009.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 89605156 + 429025 = 9466^2 + 655^2 .

It is a cyclic number.

It is not a de Polignac number, because 90034181 - 2⁶ = 90034117 is a prime.

It is a super-2 number, since 2×90034181² = 16212307496681522, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 90034181.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90034111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45017090 + 45017091.

It is an arithmetic number, because the mean of its divisors is an integer number (45017091).

Almost surely, 2^90034181 is an apocalyptic number.

It is an amenable number.

90034181 is a deficient number, since it is larger than the sum of its proper divisors (1).

90034181 is an equidigital number, since it uses as much as digits as its factorization.

90034181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 90034181 is about 9488.6343063689. The cubic root of 90034181 is about 448.1972003994.

The spelling of 90034181 in words is "ninety million, thirty-four thousand, one hundred eighty-one".