1551003049 has 2 divisors, whose sum is σ = 1551003050. Its totient is φ = 1551003048.

The previous prime is 1551003029. The next prime is 1551003059. The reversal of 1551003049 is 9403001551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1436940649 + 114062400 = 37907^2 + 10680^2 .

It is an emirp because it is prime and its reverse (9403001551) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1551003049 - 2¹⁷ = 1550871977 is a prime.

It is a super-4 number, since 4×1551003049⁴ (a number of 38 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (1551003029) 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 as a sum of consecutive naturals, namely, 775501524 + 775501525.

It is an arithmetic number, because the mean of its divisors is an integer number (775501525).

Almost surely, 2^1551003049 is an apocalyptic number.

It is an amenable number.

1551003049 is a deficient number, since it is larger than the sum of its proper divisors (1).

1551003049 is an equidigital number, since it uses as much as digits as its factorization.

1551003049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2700, while the sum is 28.

The square root of 1551003049 is about 39382.7760448651. The cubic root of 1551003049 is about 1157.5441128130.

The spelling of 1551003049 in words is "one billion, five hundred fifty-one million, three thousand, forty-nine".