1552545217 has 2 divisors, whose sum is σ = 1552545218. Its totient is φ = 1552545216.

The previous prime is 1552545199. The next prime is 1552545251. The reversal of 1552545217 is 7125452551.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1196053056 + 356492161 = 34584^2 + 18881^2 .

It is a cyclic number.

It is not a de Polignac number, because 1552545217 - 2⁷ = 1552545089 is a prime.

It is not a weakly prime, because it can be changed into another prime (1552545257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 776272608 + 776272609.

It is an arithmetic number, because the mean of its divisors is an integer number (776272609).

Almost surely, 2^1552545217 is an apocalyptic number.

It is an amenable number.

1552545217 is a deficient number, since it is larger than the sum of its proper divisors (1).

1552545217 is an equidigital number, since it uses as much as digits as its factorization.

1552545217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 70000, while the sum is 37.

The square root of 1552545217 is about 39402.3503994368. The cubic root of 1552545217 is about 1157.9276358422.

Adding to 1552545217 its reverse (7125452551), we get a palindrome (8677997768).

The spelling of 1552545217 in words is "one billion, five hundred fifty-two million, five hundred forty-five thousand, two hundred seventeen".