90010101 has 8 divisors (see below), whose sum is σ = 120062880. Its totient is φ = 59982032.

The previous prime is 90010091. The next prime is 90010103. The reversal of 90010101 is 10101009.

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 90010101 - 2¹³ = 90001909 is a prime.

90010101 is a modest number, since divided by 10101 gives 90 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90010103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5455 + ... + 14483.

It is an arithmetic number, because the mean of its divisors is an integer number (15007860).

Almost surely, 2^90010101 is an apocalyptic number.

It is an amenable number.

90010101 is a deficient number, since it is larger than the sum of its proper divisors (30052779).

90010101 is a wasteful number, since it uses less digits than its factorization.

90010101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12355.

The product of its (nonzero) digits is 9, while the sum is 12.

The square root of 90010101 is about 9487.3653350127. The cubic root of 90010101 is about 448.1572394616.

The spelling of 90010101 in words is "ninety million, ten thousand, one hundred one".