1550216445 has 32 divisors (see below), whose sum is σ = 2632089600. Its totient is φ = 777420864.

The previous prime is 1550216407. The next prime is 1550216467. The reversal of 1550216445 is 5446120551.

It is not a de Polignac number, because 1550216445 - 2⁸ = 1550216189 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17725 + ... + 58434.

It is an arithmetic number, because the mean of its divisors is an integer number (82252800).

Almost surely, 2^1550216445 is an apocalyptic number.

1550216445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1550216445 is a deficient number, since it is larger than the sum of its proper divisors (1081873155).

1550216445 is a wasteful number, since it uses less digits than its factorization.

1550216445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76249.

The product of its (nonzero) digits is 24000, while the sum is 33.

The square root of 1550216445 is about 39372.7881283508. The cubic root of 1550216445 is about 1157.3483937049.

Adding to 1550216445 its reverse (5446120551), we get a palindrome (6996336996).

The spelling of 1550216445 in words is "one billion, five hundred fifty million, two hundred sixteen thousand, four hundred forty-five".