28548553 has 4 divisors (see below), whose sum is σ = 31143888. Its totient is φ = 25953220.

The previous prime is 28548547. The next prime is 28548577. The reversal of 28548553 is 35584582.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28548553 - 2⁵ = 28548521 is a prime.

It is a super-3 number, since 3×28548553³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28548523) 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, 1297651 + ... + 1297672.

It is an arithmetic number, because the mean of its divisors is an integer number (7785972).

Almost surely, 2^28548553 is an apocalyptic number.

It is an amenable number.

28548553 is a deficient number, since it is larger than the sum of its proper divisors (2595335).

28548553 is a wasteful number, since it uses less digits than its factorization.

28548553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2595334.

The product of its digits is 192000, while the sum is 40.

The square root of 28548553 is about 5343.0845959988. The cubic root of 28548553 is about 305.6290983652.

The spelling of 28548553 in words is "twenty-eight million, five hundred forty-eight thousand, five hundred fifty-three".