1553222287 has 2 divisors, whose sum is σ = 1553222288. Its totient is φ = 1553222286.

The previous prime is 1553222227. The next prime is 1553222347. The reversal of 1553222287 is 7822223551.

It is a balanced prime because it is at equal distance from previous prime (1553222227) and next prime (1553222347).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1553222287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1553222227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 776611143 + 776611144.

It is an arithmetic number, because the mean of its divisors is an integer number (776611144).

Almost surely, 2^1553222287 is an apocalyptic number.

1553222287 is a deficient number, since it is larger than the sum of its proper divisors (1).

1553222287 is an equidigital number, since it uses as much as digits as its factorization.

1553222287 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 67200, while the sum is 37.

The square root of 1553222287 is about 39410.9412092632. The cubic root of 1553222287 is about 1158.0959367104.

It can be divided in two parts, 155322 and 2287, that added together give a square (157609 = 397²).

The spelling of 1553222287 in words is "one billion, five hundred fifty-three million, two hundred twenty-two thousand, two hundred eighty-seven".