513525615061 has 4 divisors (see below), whose sum is σ = 516600618912. Its totient is φ = 510450611212.

The previous prime is 513525615013. The next prime is 513525615089. The reversal of 513525615061 is 160516525315.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 160516525315 = 5 ⋅32103305063.

It is a cyclic number.

It is not a de Polignac number, because 513525615061 - 2²⁵ = 513492060629 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 (513525615661) 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, 1537501675 + ... + 1537502008.

It is an arithmetic number, because the mean of its divisors is an integer number (129150154728).

Almost surely, 2^513525615061 is an apocalyptic number.

It is an amenable number.

513525615061 is a deficient number, since it is larger than the sum of its proper divisors (3075003851).

513525615061 is a wasteful number, since it uses less digits than its factorization.

513525615061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3075003850.

The product of its (nonzero) digits is 135000, while the sum is 40.

The spelling of 513525615061 in words is "five hundred thirteen billion, five hundred twenty-five million, six hundred fifteen thousand, sixty-one".