223220537 has 2 divisors, whose sum is σ = 223220538. Its totient is φ = 223220536.

The previous prime is 223220527. The next prime is 223220549. The reversal of 223220537 is 735022322.

223220537 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 221741881 + 1478656 = 14891^2 + 1216^2 .

It is a cyclic number.

It is not a de Polignac number, because 223220537 - 2⁸ = 223220281 is a prime.

It is a super-3 number, since 3×223220537³ (a number of 26 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (223220527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111610268 + 111610269.

It is an arithmetic number, because the mean of its divisors is an integer number (111610269).

Almost surely, 2^223220537 is an apocalyptic number.

It is an amenable number.

223220537 is a deficient number, since it is larger than the sum of its proper divisors (1).

223220537 is an equidigital number, since it uses as much as digits as its factorization.

223220537 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 26.

The square root of 223220537 is about 14940.5668232500. The cubic root of 223220537 is about 606.6125385766.

Adding to 223220537 its reverse (735022322), we get a palindrome (958242859).

The spelling of 223220537 in words is "two hundred twenty-three million, two hundred twenty thousand, five hundred thirty-seven".