28162553 has 2 divisors, whose sum is σ = 28162554. Its totient is φ = 28162552.

The previous prime is 28162517. The next prime is 28162559. The reversal of 28162553 is 35526182.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14115049 + 14047504 = 3757^2 + 3748^2 .

It is a cyclic number.

It is not a de Polignac number, because 28162553 - 2¹⁸ = 27900409 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (28162559) 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 as a sum of consecutive naturals, namely, 14081276 + 14081277.

It is an arithmetic number, because the mean of its divisors is an integer number (14081277).

Almost surely, 2^28162553 is an apocalyptic number.

It is an amenable number.

28162553 is a deficient number, since it is larger than the sum of its proper divisors (1).

28162553 is an equidigital number, since it uses as much as digits as its factorization.

28162553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14400, while the sum is 32.

The square root of 28162553 is about 5306.8402086364. The cubic root of 28162553 is about 304.2453906528.

The spelling of 28162553 in words is "twenty-eight million, one hundred sixty-two thousand, five hundred fifty-three".