1550133009 has 6 divisors (see below), whose sum is σ = 2239081026. Its totient is φ = 1033422000.

The previous prime is 1550132963. The next prime is 1550133059. The reversal of 1550133009 is 9003310551.

It can be written as a sum of positive squares in only one way, i.e., 1019844225 + 530288784 = 31935^2 + 23028^2 .

It is not a de Polignac number, because 1550133009 - 2⁹ = 1550132497 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1550133059) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 86118492 + ... + 86118509.

It is an arithmetic number, because the mean of its divisors is an integer number (373180171).

Almost surely, 2^1550133009 is an apocalyptic number.

It is an amenable number.

1550133009 is a deficient number, since it is larger than the sum of its proper divisors (688948017).

1550133009 is a wasteful number, since it uses less digits than its factorization.

1550133009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172237007 (or 172237004 counting only the distinct ones).

The product of its (nonzero) digits is 2025, while the sum is 27.

The square root of 1550133009 is about 39371.7285498110. The cubic root of 1550133009 is about 1157.3276296683.

The spelling of 1550133009 in words is "one billion, five hundred fifty million, one hundred thirty-three thousand, nine".