28552529 has 4 divisors (see below), whose sum is σ = 28574784. Its totient is φ = 28530276.

The previous prime is 28552487. The next prime is 28552541. The reversal of 28552529 is 92525582.

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, and also an emirpimes, since its reverse is a distinct semiprime: 92525582 = 2 ⋅46262791.

It is a cyclic number.

It is not a de Polignac number, because 28552529 - 2⁸ = 28552273 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28552492 and 28552501.

It is not an unprimeable number, because it can be changed into a prime (28552429) 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, 9077 + ... + 11810.

It is an arithmetic number, because the mean of its divisors is an integer number (7143696).

Almost surely, 2^28552529 is an apocalyptic number.

It is an amenable number.

28552529 is a deficient number, since it is larger than the sum of its proper divisors (22255).

28552529 is a wasteful number, since it uses less digits than its factorization.

28552529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22254.

The product of its digits is 72000, while the sum is 38.

The square root of 28552529 is about 5343.4566527670. The cubic root of 28552529 is about 305.6432861816.

The spelling of 28552529 in words is "twenty-eight million, five hundred fifty-two thousand, five hundred twenty-nine".