28563053 has 4 divisors (see below), whose sum is σ = 28592700. Its totient is φ = 28533408.

The previous prime is 28563049. The next prime is 28563071. The reversal of 28563053 is 35036582.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19333609 + 9229444 = 4397^2 + 3038^2 .

It is a cyclic number.

It is not a de Polignac number, because 28563053 - 2² = 28563049 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28563083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13328 + ... + 15321.

It is an arithmetic number, because the mean of its divisors is an integer number (7148175).

Almost surely, 2^28563053 is an apocalyptic number.

It is an amenable number.

28563053 is a deficient number, since it is larger than the sum of its proper divisors (29647).

28563053 is an equidigital number, since it uses as much as digits as its factorization.

28563053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29646.

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 28563053 is about 5344.4413178554. The cubic root of 28563053 is about 305.6808332915.

The spelling of 28563053 in words is "twenty-eight million, five hundred sixty-three thousand, fifty-three".