1553222227 has 2 divisors, whose sum is σ = 1553222228. Its totient is φ = 1553222226.

The previous prime is 1553222219. The next prime is 1553222287. The reversal of 1553222227 is 7222223551.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1553222227 - 2³ = 1553222219 is a prime.

It is not a weakly prime, because it can be changed into another prime (1553222287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 776611113 + 776611114.

It is an arithmetic number, because the mean of its divisors is an integer number (776611114).

Almost surely, 2^1553222227 is an apocalyptic number.

1553222227 is a deficient number, since it is larger than the sum of its proper divisors (1).

1553222227 is an equidigital number, since it uses as much as digits as its factorization.

1553222227 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16800, while the sum is 31.

The square root of 1553222227 is about 39410.9404480533. The cubic root of 1553222227 is about 1158.0959217983.

Adding to 1553222227 its reverse (7222223551), we get a palindrome (8775445778).

The spelling of 1553222227 in words is "one billion, five hundred fifty-three million, two hundred twenty-two thousand, two hundred twenty-seven".