1553249 has 2 divisors, whose sum is σ = 1553250. Its totient is φ = 1553248.

The previous prime is 1553191. The next prime is 1553281. The reversal of 1553249 is 9423551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 937024 + 616225 = 968^2 + 785^2 .

It is a cyclic number.

It is not a de Polignac number, because 1553249 - 2¹⁶ = 1487713 is a prime.

It is not a weakly prime, because it can be changed into another prime (1555249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 776624 + 776625.

It is an arithmetic number, because the mean of its divisors is an integer number (776625).

2^1553249 is an apocalyptic number.

It is an amenable number.

1553249 is a deficient number, since it is larger than the sum of its proper divisors (1).

1553249 is an equidigital number, since it uses as much as digits as its factorization.

1553249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5400, while the sum is 29.

The square root of 1553249 is about 1246.2941065415. The cubic root of 1553249 is about 115.8102575820.

The spelling of 1553249 in words is "one million, five hundred fifty-three thousand, two hundred forty-nine".