1552541993 has 2 divisors, whose sum is σ = 1552541994. Its totient is φ = 1552541992.

The previous prime is 1552541971. The next prime is 1552542007. The reversal of 1552541993 is 3991452551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1500167824 + 52374169 = 38732^2 + 7237^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1552541993 is a prime.

It is not a weakly prime, because it can be changed into another prime (1552541953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 776270996 + 776270997.

It is an arithmetic number, because the mean of its divisors is an integer number (776270997).

Almost surely, 2^1552541993 is an apocalyptic number.

It is an amenable number.

1552541993 is a deficient number, since it is larger than the sum of its proper divisors (1).

1552541993 is an equidigital number, since it uses as much as digits as its factorization.

1552541993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 243000, while the sum is 44.

The square root of 1552541993 is about 39402.3094881506. The cubic root of 1552541993 is about 1157.9268343280.

The spelling of 1552541993 in words is "one billion, five hundred fifty-two million, five hundred forty-one thousand, nine hundred ninety-three".