520231552 has 64 divisors (see below), whose sum is σ = 1155211200. Its totient is φ = 231911424.

The previous prime is 520231541. The next prime is 520231573. The reversal of 520231552 is 255132025.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35053 + ... + 47635.

It is an arithmetic number, because the mean of its divisors is an integer number (18050175).

Almost surely, 2^520231552 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 520231552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (577605600).

520231552 is an abundant number, since it is smaller than the sum of its proper divisors (634979648).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

520231552 is a wasteful number, since it uses less digits than its factorization.

520231552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12633 (or 12621 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 520231552 is about 22808.5850503708. The cubic root of 520231552 is about 804.2644938890.

Adding to 520231552 its reverse (255132025), we get a palindrome (775363577).

The spelling of 520231552 in words is "five hundred twenty million, two hundred thirty-one thousand, five hundred fifty-two".