520536541 has 4 divisors (see below), whose sum is σ = 594898912. Its totient is φ = 446174172.

The previous prime is 520536517. The next prime is 520536557. The reversal of 520536541 is 145635025.

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-520536541 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 (520536581) 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, 37181175 + ... + 37181188.

It is an arithmetic number, because the mean of its divisors is an integer number (148724728).

Almost surely, 2^520536541 is an apocalyptic number.

It is an amenable number.

520536541 is a deficient number, since it is larger than the sum of its proper divisors (74362371).

520536541 is an equidigital number, since it uses as much as digits as its factorization.

520536541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74362370.

The product of its (nonzero) digits is 18000, while the sum is 31.

The square root of 520536541 is about 22815.2699085503. The cubic root of 520536541 is about 804.4216315480.

The spelling of 520536541 in words is "five hundred twenty million, five hundred thirty-six thousand, five hundred forty-one".