90073181 has 8 divisors (see below), whose sum is σ = 98600544. Its totient is φ = 81602320.

The previous prime is 90073163. The next prime is 90073189. The reversal of 90073181 is 18137009.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 90073181 - 2¹⁴ = 90056797 is a prime.

It is a super-2 number, since 2×90073181² = 16226355870917522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90073189) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10751 + ... + 17196.

It is an arithmetic number, because the mean of its divisors is an integer number (12325068).

Almost surely, 2^90073181 is an apocalyptic number.

It is an amenable number.

90073181 is a deficient number, since it is larger than the sum of its proper divisors (8527363).

90073181 is a wasteful number, since it uses less digits than its factorization.

90073181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28251.

The product of its (nonzero) digits is 1512, while the sum is 29.

The square root of 90073181 is about 9490.6891741327. The cubic root of 90073181 is about 448.2619060750.

The spelling of 90073181 in words is "ninety million, seventy-three thousand, one hundred eighty-one".