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536221 = 776603
BaseRepresentation
bin10000010111010011101
31000020120001
42002322131
5114124341
615254301
74362220
oct2027235
91006501
10536221
11336964
1221a391
1315a0ba
14dd5b7
15a8d31
hex82e9d

536221 has 4 divisors (see below), whose sum is σ = 612832. Its totient is φ = 459612.

The previous prime is 536219. The next prime is 536227. The reversal of 536221 is 122635.

It is a happy number.

536221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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: 122635 = 524527.

It is a cyclic number.

It is not a de Polignac number, because 536221 - 21 = 536219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (536227) 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, 38295 + ... + 38308.

It is an arithmetic number, because the mean of its divisors is an integer number (153208).

2536221 is an apocalyptic number.

It is an amenable number.

536221 is a deficient number, since it is larger than the sum of its proper divisors (76611).

536221 is an equidigital number, since it uses as much as digits as its factorization.

536221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76610.

The product of its digits is 360, while the sum is 19.

The square root of 536221 is about 732.2711246526. The cubic root of 536221 is about 81.2421246805.

Adding to 536221 its reverse (122635), we get a palindrome (658856).

It can be divided in two parts, 536 and 221, that added together give a palindrome (757).

The spelling of 536221 in words is "five hundred thirty-six thousand, two hundred twenty-one".

Divisors: 1 7 76603 536221