1550094145 has 4 divisors (see below), whose sum is σ = 1860112980. Its totient is φ = 1240075312.

The previous prime is 1550094121. The next prime is 1550094173. The reversal of 1550094145 is 5414900551.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 780420096 + 769674049 = 27936^2 + 27743^2 .

It is a cyclic number.

It is not a de Polignac number, because 1550094145 - 2⁵ = 1550094113 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1550094145.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155009410 + ... + 155009419.

It is an arithmetic number, because the mean of its divisors is an integer number (465028245).

Almost surely, 2^1550094145 is an apocalyptic number.

It is an amenable number.

1550094145 is a deficient number, since it is larger than the sum of its proper divisors (310018835).

1550094145 is an equidigital number, since it uses as much as digits as its factorization.

1550094145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310018834.

The product of its (nonzero) digits is 18000, while the sum is 34.

The square root of 1550094145 is about 39371.2349945998. The cubic root of 1550094145 is about 1157.3179576473.

Adding to 1550094145 its reverse (5414900551), we get a palindrome (6964994696).

The spelling of 1550094145 in words is "one billion, five hundred fifty million, ninety-four thousand, one hundred forty-five".