92021 has 4 divisors (see below), whose sum is σ = 97452.
Its totient is φ = 86592.
The previous prime is 92009. The next prime is 92033. The reversal of 92021 is 12029.
92021 = 2142 + 2152.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12029 = 23 ⋅523.
It is an interprime number because it is at equal distance from previous prime (92009) and next prime (92033).
It can be written as a sum of positive squares in 2 ways, for example, as 45796 + 46225 = 214^2 + 215^2
It is a cyclic number.
It is not a de Polignac number, because 92021 - 26 = 91957 is a prime.
It is an Ulam number.
It is a Duffinian number.
It is a Curzon number.
It is a junction number, because it is equal to n+sod(n) for n = 91987 and 92005.
It is a congruent number.
It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 92021.
It is not an unprimeable number, because it can be changed into a prime (92041) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2690 + ... + 2723.
It is an arithmetic number, because the mean of its divisors is an integer number (24363).
292021 is an apocalyptic number.
92021 is the 215-th centered square number.
It is an amenable number.
92021 is a deficient number, since it is larger than the sum of its proper divisors (5431).
92021 is a wasteful number, since it uses less digits than its factorization.
92021 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 5430.
The product of its (nonzero) digits is 36, while the sum is 14.
The square root of 92021 is about 303.3496332617.
The cubic root of 92021 is about 45.1470089306.
The spelling of 92021 in words is "ninety-two thousand, twenty-one".