1552988917 has 8 divisors (see below), whose sum is σ = 1560769560. Its totient is φ = 1545223680.

The previous prime is 1552988891. The next prime is 1552988923. The reversal of 1552988917 is 7198892551.

It can be written as a sum of positive squares in 4 ways, for example, as 25664356 + 1527324561 = 5066^2 + 39081^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1552988917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1552988317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 233713 + ... + 240265.

It is an arithmetic number, because the mean of its divisors is an integer number (195096195).

Almost surely, 2^1552988917 is an apocalyptic number.

It is an amenable number.

1552988917 is a deficient number, since it is larger than the sum of its proper divisors (7780643).

1552988917 is an equidigital number, since it uses as much as digits as its factorization.

1552988917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7703.

The product of its digits is 1814400, while the sum is 55.

The square root of 1552988917 is about 39407.9803720008. The cubic root of 1552988917 is about 1158.0379329103.

The spelling of 1552988917 in words is "one billion, five hundred fifty-two million, nine hundred eighty-eight thousand, nine hundred seventeen".