Search a number
-
+
1013225 = 5240529
BaseRepresentation
bin11110111010111101001
31220110212212
43313113221
5224410400
633414505
711420003
oct3672751
91813785
101013225
11632284
1240a435
13296255
141c5373
15150335
hexf75e9

1013225 has 6 divisors (see below), whose sum is σ = 1256430. Its totient is φ = 810560.

The previous prime is 1013203. The next prime is 1013227. The reversal of 1013225 is 5223101.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 258064 + 755161 = 508^2 + 869^2 .

It is not a de Polignac number, because 1013225 - 210 = 1012201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1013227) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 20240 + ... + 20289.

It is an arithmetic number, because the mean of its divisors is an integer number (209405).

21013225 is an apocalyptic number.

It is an amenable number.

1013225 is a deficient number, since it is larger than the sum of its proper divisors (243205).

1013225 is an equidigital number, since it uses as much as digits as its factorization.

1013225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40539 (or 40534 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 1013225 is about 1006.5907808042. The cubic root of 1013225 is about 100.4389041465.

Adding to 1013225 its reverse (5223101), we get a palindrome (6236326).

The spelling of 1013225 in words is "one million, thirteen thousand, two hundred twenty-five".

Divisors: 1 5 25 40529 202645 1013225