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2213525 = 52372393
BaseRepresentation
bin1000011100011010010101
311011110101102
420130122111
51031313100
6115235445
724546266
oct10343225
94143342
102213525
111282066
128a8b85
135c66a2
1441896d
152dacd5
hex21c695

2213525 has 12 divisors (see below), whose sum is σ = 2820132. Its totient is φ = 1722240.

The previous prime is 2213489. The next prime is 2213531. The reversal of 2213525 is 5253122.

It can be written as a sum of positive squares in 6 ways, for example, as 119716 + 2093809 = 346^2 + 1447^2 .

It is not a de Polignac number, because 2213525 - 26 = 2213461 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2213497 and 2213506.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 272 + ... + 2121.

It is an arithmetic number, because the mean of its divisors is an integer number (235011).

22213525 is an apocalyptic number.

2213525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2213525 is a deficient number, since it is larger than the sum of its proper divisors (606607).

2213525 is a wasteful number, since it uses less digits than its factorization.

2213525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2440 (or 2435 counting only the distinct ones).

The product of its digits is 600, while the sum is 20.

The square root of 2213525 is about 1487.7919881489. The cubic root of 2213525 is about 130.3251230902.

Adding to 2213525 its reverse (5253122), we get a palindrome (7466647).

The spelling of 2213525 in words is "two million, two hundred thirteen thousand, five hundred twenty-five".

Divisors: 1 5 25 37 185 925 2393 11965 59825 88541 442705 2213525