28263553 has 2 divisors, whose sum is σ = 28263554. Its totient is φ = 28263552.

The previous prime is 28263551. The next prime is 28263577. The reversal of 28263553 is 35536282.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20903184 + 7360369 = 4572^2 + 2713^2 .

It is a cyclic number.

It is not a de Polignac number, because 28263553 - 2¹ = 28263551 is a prime.

Together with 28263551, it forms a pair of twin primes.

It is equal to p_1756807 and since 28263553 and 1756807 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (28263551) 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 as a sum of consecutive naturals, namely, 14131776 + 14131777.

It is an arithmetic number, because the mean of its divisors is an integer number (14131777).

Almost surely, 2^28263553 is an apocalyptic number.

It is an amenable number.

28263553 is a deficient number, since it is larger than the sum of its proper divisors (1).

28263553 is an equidigital number, since it uses as much as digits as its factorization.

28263553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43200, while the sum is 34.

The square root of 28263553 is about 5316.3477124808. The cubic root of 28263553 is about 304.6086640988.

The spelling of 28263553 in words is "twenty-eight million, two hundred sixty-three thousand, five hundred fifty-three".