1227157 has 2 divisors, whose sum is σ = 1227158. Its totient is φ = 1227156.

The previous prime is 1227151. The next prime is 1227167. The reversal of 1227157 is 7517221.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 988036 + 239121 = 994^2 + 489^2 .

It is a cyclic number.

It is not a de Polignac number, because 1227157 - 2¹¹ = 1225109 is a prime.

1227157 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1227151) 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, 613578 + 613579.

It is an arithmetic number, because the mean of its divisors is an integer number (613579).

2^1227157 is an apocalyptic number.

It is an amenable number.

1227157 is a deficient number, since it is larger than the sum of its proper divisors (1).

1227157 is an equidigital number, since it uses as much as digits as its factorization.

1227157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 980, while the sum is 25.

The square root of 1227157 is about 1107.7711857599. The cubic root of 1227157 is about 107.0615129459.

Subtracting 1227157 from its reverse (7517221), we obtain a square (6290064 = 2508²).

The spelling of 1227157 in words is "one million, two hundred twenty-seven thousand, one hundred fifty-seven".