63557227 has 2 divisors, whose sum is σ = 63557228. Its totient is φ = 63557226.

The previous prime is 63557201. The next prime is 63557239. The reversal of 63557227 is 72275536.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63557227 is a prime.

It is a super-2 number, since 2×63557227² = 8079042207859058, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (63557327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31778613 + 31778614.

It is an arithmetic number, because the mean of its divisors is an integer number (31778614).

Almost surely, 2^63557227 is an apocalyptic number.

63557227 is a deficient number, since it is larger than the sum of its proper divisors (1).

63557227 is an equidigital number, since it uses as much as digits as its factorization.

63557227 is an evil number, because the sum of its binary digits is even.

The product of its digits is 88200, while the sum is 37.

The square root of 63557227 is about 7972.2786579497. The cubic root of 63557227 is about 399.0754207798.

The spelling of 63557227 in words is "sixty-three million, five hundred fifty-seven thousand, two hundred twenty-seven".