90511 has 2 divisors, whose sum is σ = 90512. Its totient is φ = 90510.

The previous prime is 90499. The next prime is 90523. The reversal of 90511 is 11509.

It is a balanced prime because it is at equal distance from previous prime (90499) and next prime (90523).

It is a cyclic number.

It is not a de Polignac number, because 90511 - 2¹¹ = 88463 is a prime.

It is a super-2 number, since 2×90511² = 16384482242, which contains 22 as substring.

It is a plaindrome in base 12.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45255 + 45256.

It is an arithmetic number, because the mean of its divisors is an integer number (45256).

2⁹⁰⁵¹¹ is an apocalyptic number.

90511 is a deficient number, since it is larger than the sum of its proper divisors (1).

90511 is an equidigital number, since it uses as much as digits as its factorization.

90511 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45, while the sum is 16.

The square root of 90511 is about 300.8504611929. The cubic root of 90511 is about 44.8987021845.

The spelling of 90511 in words is "ninety thousand, five hundred eleven".