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2247521 is a prime number
BaseRepresentation
bin1000100100101101100001
311020012000112
420210231201
51033410041
6120101105
725050353
oct10445541
94205015
102247521
1112a5661
12904795
13608cc3
144270d3
152e5deb
hex224b61

2247521 has 2 divisors, whose sum is σ = 2247522. Its totient is φ = 2247520.

The previous prime is 2247503. The next prime is 2247523. The reversal of 2247521 is 1257422.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2190400 + 57121 = 1480^2 + 239^2 .

It is a cyclic number.

It is not a de Polignac number, because 2247521 - 218 = 1985377 is a prime.

Together with 2247523, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2247523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1123760 + 1123761.

It is an arithmetic number, because the mean of its divisors is an integer number (1123761).

22247521 is an apocalyptic number.

It is an amenable number.

2247521 is a deficient number, since it is larger than the sum of its proper divisors (1).

2247521 is an equidigital number, since it uses as much as digits as its factorization.

2247521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1120, while the sum is 23.

The square root of 2247521 is about 1499.1734389323. The cubic root of 2247521 is about 130.9889274483.

Subtracting from 2247521 its reverse (1257422), we obtain a palindrome (990099).

The spelling of 2247521 in words is "two million, two hundred forty-seven thousand, five hundred twenty-one".