1550548129 has 15 divisors (see below), whose sum is σ = 1686996143. Its totient is φ = 1425132384.

The previous prime is 1550548117. The next prime is 1550548163. The reversal of 1550548129 is 9218450551.

The square root of 1550548129 is 39377.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 7 ways, for example, as 1402877025 + 147671104 = 37455^2 + 12152^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1550548129 is a prime.

It is a Duffinian number.

It is a zygodrome in base 3.

It is a junction number, because it is equal to n+sod(n) for n = 1550548091 and 1550548100.

It is not an unprimeable number, because it can be changed into a prime (1550548169) 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 in 14 ways as a sum of consecutive naturals, for example, 6654597 + ... + 6654829.

Almost surely, 2^1550548129 is an apocalyptic number.

1550548129 is the 39377-th square number.

1550548129 is the 19689-th centered octagonal number.

It is an amenable number.

1550548129 is a deficient number, since it is larger than the sum of its proper divisors (136448014).

1550548129 is an frugal number, since it uses more digits than its factorization.

1550548129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518 (or 246 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 40.

The cubic root of 1550548129 is about 1157.4309298289.

The spelling of 1550548129 in words is "one billion, five hundred fifty million, five hundred forty-eight thousand, one hundred twenty-nine".