1521052055513 has 4 divisors (see below), whose sum is σ = 1521366912768. Its totient is φ = 1520737198260.

The previous prime is 1521052055429. The next prime is 1521052055527. The reversal of 1521052055513 is 3155502501251.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1521052055513 - 2¹⁸ = 1521051793369 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1521052055533) 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, 157421381 + ... + 157431042.

It is an arithmetic number, because the mean of its divisors is an integer number (380341728192).

Almost surely, 2^{1521052055513} is an apocalyptic number.

It is an amenable number.

1521052055513 is a deficient number, since it is larger than the sum of its proper divisors (314857255).

1521052055513 is an equidigital number, since it uses as much as digits as its factorization.

1521052055513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314857254.

The product of its (nonzero) digits is 37500, while the sum is 35.

Adding to 1521052055513 its reverse (3155502501251), we get a palindrome (4676554556764).

The spelling of 1521052055513 in words is "one trillion, five hundred twenty-one billion, fifty-two million, fifty-five thousand, five hundred thirteen".