1550512109 has 2 divisors, whose sum is σ = 1550512110. Its totient is φ = 1550512108.

The previous prime is 1550512063. The next prime is 1550512111. The reversal of 1550512109 is 9012150551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1264158025 + 286354084 = 35555^2 + 16922^2 .

It is a cyclic number.

It is not a de Polignac number, because 1550512109 - 2²⁴ = 1533734893 is a prime.

Together with 1550512111, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1550512609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 775256054 + 775256055.

It is an arithmetic number, because the mean of its divisors is an integer number (775256055).

Almost surely, 2^1550512109 is an apocalyptic number.

It is an amenable number.

1550512109 is a deficient number, since it is larger than the sum of its proper divisors (1).

1550512109 is an equidigital number, since it uses as much as digits as its factorization.

1550512109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2250, while the sum is 29.

The square root of 1550512109 is about 39376.5426237500. The cubic root of 1550512109 is about 1157.4219671951.

The spelling of 1550512109 in words is "one billion, five hundred fifty million, five hundred twelve thousand, one hundred nine".