28051 has 2 divisors, whose sum is σ = 28052.
Its totient is φ = 28050.
The previous prime is 28031. The next prime is 28057. The reversal of 28051 is 15082.
It is a happy number.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 28051 - 25 = 28019 is a prime.
It is not a weakly prime, because it can be changed into another prime (28057) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14025 + 14026.
It is an arithmetic number, because the mean of its divisors is an integer number (14026).
228051 is an apocalyptic number.
28051 is a deficient number, since it is larger than the sum of its proper divisors (1).
28051 is an equidigital number, since it uses as much as digits as its factorization.
28051 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 80, while the sum is 16.
The square root of 28051 is about 167.4843276250.
The cubic root of 28051 is about 30.3843149696.
The spelling of 28051 in words is "twenty-eight thousand, fifty-one".