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2249321 = 17132313
BaseRepresentation
bin1000100101001001101001
311020021111012
420211021221
51033434241
6120113305
725055534
oct10451151
94207435
102249321
1112a6a48
12905835
13609a79
14427a1b
152e66eb
hex225269

2249321 has 4 divisors (see below), whose sum is σ = 2381652. Its totient is φ = 2116992.

The previous prime is 2249311. The next prime is 2249363. The reversal of 2249321 is 1239422.

2249321 = 10602 + 10612.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1239422 = 2619711.

It can be written as a sum of positive squares in 2 ways, for example, as 1125721 + 1123600 = 1061^2 + 1060^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-2249321 is a prime.

It is a super-2 number, since 2×22493212 = 10118889922082, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2249311) 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, 66140 + ... + 66173.

It is an arithmetic number, because the mean of its divisors is an integer number (595413).

22249321 is an apocalyptic number.

2249321 is the 1061-st centered square number.

It is an amenable number.

2249321 is a deficient number, since it is larger than the sum of its proper divisors (132331).

2249321 is a wasteful number, since it uses less digits than its factorization.

2249321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132330.

The product of its digits is 864, while the sum is 23.

The square root of 2249321 is about 1499.7736495885. The cubic root of 2249321 is about 131.0238870257.

The spelling of 2249321 in words is "two million, two hundred forty-nine thousand, three hundred twenty-one".

Divisors: 1 17 132313 2249321