513525145053 has 4 divisors (see below), whose sum is σ = 684700193408. Its totient is φ = 342350096700.

The previous prime is 513525144941. The next prime is 513525145057. The reversal of 513525145053 is 350541525315.

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 not a de Polignac number, because 513525145053 - 2⁹ = 513525144541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513525145057) 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, 85587524173 + ... + 85587524178.

It is an arithmetic number, because the mean of its divisors is an integer number (171175048352).

Almost surely, 2^513525145053 is an apocalyptic number.

It is an amenable number.

513525145053 is a deficient number, since it is larger than the sum of its proper divisors (171175048355).

513525145053 is a wasteful number, since it uses less digits than its factorization.

513525145053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171175048354.

The product of its (nonzero) digits is 225000, while the sum is 39.

The spelling of 513525145053 in words is "five hundred thirteen billion, five hundred twenty-five million, one hundred forty-five thousand, fifty-three".