520263541 has 4 divisors (see below), whose sum is σ = 594586912. Its totient is φ = 445940172.

The previous prime is 520263467. The next prime is 520263551. The reversal of 520263541 is 145362025.

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 not a de Polignac number, because 520263541 - 2¹¹ = 520261493 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 (520263551) 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, 37161675 + ... + 37161688.

It is an arithmetic number, because the mean of its divisors is an integer number (148646728).

Almost surely, 2^520263541 is an apocalyptic number.

It is an amenable number.

520263541 is a deficient number, since it is larger than the sum of its proper divisors (74323371).

520263541 is an equidigital number, since it uses as much as digits as its factorization.

520263541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74323370.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 520263541 is about 22809.2862887027. The cubic root of 520263541 is about 804.2809782727.

The spelling of 520263541 in words is "five hundred twenty million, two hundred sixty-three thousand, five hundred forty-one".