525320503 has 4 divisors (see below), whose sum is σ = 525374440. Its totient is φ = 525266568.

The previous prime is 525320489. The next prime is 525320539. The reversal of 525320503 is 305023525.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-525320503 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 (525320563) 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, 7833 + ... + 33346.

It is an arithmetic number, because the mean of its divisors is an integer number (131343610).

Almost surely, 2^525320503 is an apocalyptic number.

525320503 is a deficient number, since it is larger than the sum of its proper divisors (53937).

525320503 is a wasteful number, since it uses less digits than its factorization.

525320503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53936.

The product of its (nonzero) digits is 4500, while the sum is 25.

The square root of 525320503 is about 22919.8713565325. The cubic root of 525320503 is about 806.8784511166.

The spelling of 525320503 in words is "five hundred twenty-five million, three hundred twenty thousand, five hundred three".