1521445145 has 8 divisors (see below), whose sum is σ = 1991710080. Its totient is φ = 1106505520.

The previous prime is 1521445129. The next prime is 1521445153. The reversal of 1521445145 is 5415441251.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1521445145 - 2⁴ = 1521445129 is a prime.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 13831265 + ... + 13831374.

It is an arithmetic number, because the mean of its divisors is an integer number (248963760).

Almost surely, 2^1521445145 is an apocalyptic number.

It is an amenable number.

1521445145 is a deficient number, since it is larger than the sum of its proper divisors (470264935).

1521445145 is a wasteful number, since it uses less digits than its factorization.

1521445145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27662655.

The product of its digits is 16000, while the sum is 32.

The square root of 1521445145 is about 39005.7065696803. The cubic root of 1521445145 is about 1150.1436858903.

Adding to 1521445145 its reverse (5415441251), we get a palindrome (6936886396).

The spelling of 1521445145 in words is "one billion, five hundred twenty-one million, four hundred forty-five thousand, one hundred forty-five".