1516053545 has 4 divisors (see below), whose sum is σ = 1819264260. Its totient is φ = 1212842832.

The previous prime is 1516053527. The next prime is 1516053547. The reversal of 1516053545 is 5453506151.

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 719741584 + 796311961 = 26828^2 + 28219^2 .

It is a cyclic number.

It is not a de Polignac number, because 1516053545 - 2⁸ = 1516053289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1516053547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 151605350 + ... + 151605359.

It is an arithmetic number, because the mean of its divisors is an integer number (454816065).

Almost surely, 2^1516053545 is an apocalyptic number.

It is an amenable number.

1516053545 is a deficient number, since it is larger than the sum of its proper divisors (303210715).

1516053545 is an equidigital number, since it uses as much as digits as its factorization.

1516053545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303210714.

The product of its (nonzero) digits is 45000, while the sum is 35.

The square root of 1516053545 is about 38936.5322672680. The cubic root of 1516053545 is about 1148.7834760024.

Adding to 1516053545 its reverse (5453506151), we get a palindrome (6969559696).

The spelling of 1516053545 in words is "one billion, five hundred sixteen million, fifty-three thousand, five hundred forty-five".