525516413 has 4 divisors (see below), whose sum is σ = 525647520. Its totient is φ = 525385308.

The previous prime is 525516379. The next prime is 525516437. The reversal of 525516413 is 314615525.

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 a de Polignac number, because none of the positive numbers 2^k-525516413 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 525516413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (525516463) 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, 59345 + ... + 67622.

It is an arithmetic number, because the mean of its divisors is an integer number (131411880).

Almost surely, 2^525516413 is an apocalyptic number.

It is an amenable number.

525516413 is a deficient number, since it is larger than the sum of its proper divisors (131107).

525516413 is a wasteful number, since it uses less digits than its factorization.

525516413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131106.

The product of its digits is 18000, while the sum is 32.

The square root of 525516413 is about 22924.1447604922. The cubic root of 525516413 is about 806.9787428495.

The spelling of 525516413 in words is "five hundred twenty-five million, five hundred sixteen thousand, four hundred thirteen".