5255521 has 4 divisors (see below), whose sum is σ = 5274772. Its totient is φ = 5236272.

The previous prime is 5255507. The next prime is 5255527. The reversal of 5255521 is 1255525.

It is a happy number.

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 1354896 + 3900625 = 1164^2 + 1975^2 .

It is a cyclic number.

It is not a de Polignac number, because 5255521 - 2⁹ = 5255009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5255527) 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, 9210 + ... + 9763.

It is an arithmetic number, because the mean of its divisors is an integer number (1318693).

Almost surely, 2^5255521 is an apocalyptic number.

It is an amenable number.

5255521 is a deficient number, since it is larger than the sum of its proper divisors (19251).

5255521 is a wasteful number, since it uses less digits than its factorization.

5255521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19250.

The product of its digits is 2500, while the sum is 25.

The square root of 5255521 is about 2292.4923118737. The cubic root of 5255521 is about 173.8622351642.

It can be divided in two parts, 5255 and 521, that added together give a square (5776 = 76²).

The spelling of 5255521 in words is "five million, two hundred fifty-five thousand, five hundred twenty-one".