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BaseRepresentation
bin1110111100100111
310002222112
432330213
53424343
61151235
7343331
oct167447
9102875
1061223
1141aa8
122b51b
1321b36
1418451
1513218
hexef27

61223 has 2 divisors, whose sum is σ = 61224. Its totient is φ = 61222.

The previous prime is 61211. The next prime is 61231. The reversal of 61223 is 32216.

Adding to 61223 its reverse (32216), we get a palindrome (93439).

It is a strong prime.

61223 is a truncatable prime.

It is a cyclic number.

It is not a de Polignac number, because 61223 - 214 = 44839 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61198 and 61207.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 61223.

It is not a weakly prime, because it can be changed into another prime (61253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30611 + 30612.

It is an arithmetic number, because the mean of its divisors is an integer number (30612).

261223 is an apocalyptic number.

61223 is a deficient number, since it is larger than the sum of its proper divisors (1).

61223 is an equidigital number, since it uses as much as digits as its factorization.

61223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72, while the sum is 14.

The square root of 61223 is about 247.4328191651. The cubic root of 61223 is about 39.4128828323.

The spelling of 61223 in words is "sixty-one thousand, two hundred twenty-three".