28141553 has 4 divisors (see below), whose sum is σ = 30699888. Its totient is φ = 25583220.

The previous prime is 28141537. The next prime is 28141559. The reversal of 28141553 is 35514182.

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 28141553 - 2⁴ = 28141537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28141559) 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, 1279151 + ... + 1279172.

It is an arithmetic number, because the mean of its divisors is an integer number (7674972).

Almost surely, 2^28141553 is an apocalyptic number.

It is an amenable number.

28141553 is a deficient number, since it is larger than the sum of its proper divisors (2558335).

28141553 is a wasteful number, since it uses less digits than its factorization.

28141553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2558334.

The product of its digits is 4800, while the sum is 29.

The square root of 28141553 is about 5304.8612611453. The cubic root of 28141553 is about 304.1697495236.

The spelling of 28141553 in words is "twenty-eight million, one hundred forty-one thousand, five hundred fifty-three".