1554005009 has 2 divisors, whose sum is σ = 1554005010. Its totient is φ = 1554005008.

The previous prime is 1554004987. The next prime is 1554005023. The reversal of 1554005009 is 9005004551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 967396609 + 586608400 = 31103^2 + 24220^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1554005009 is a prime.

It is not a weakly prime, because it can be changed into another prime (1554008009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 777002504 + 777002505.

It is an arithmetic number, because the mean of its divisors is an integer number (777002505).

Almost surely, 2^1554005009 is an apocalyptic number.

It is an amenable number.

1554005009 is a deficient number, since it is larger than the sum of its proper divisors (1).

1554005009 is an equidigital number, since it uses as much as digits as its factorization.

1554005009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4500, while the sum is 29.

The square root of 1554005009 is about 39420.8702212419. The cubic root of 1554005009 is about 1158.2904388006.

The spelling of 1554005009 in words is "one billion, five hundred fifty-four million, five thousand, nine".