520273044 has 60 divisors (see below), whose sum is σ = 1378790644. Its totient is φ = 171040896.

The previous prime is 520273043. The next prime is 520273057. The reversal of 520273044 is 440372025.

It can be written as a sum of positive squares in 2 ways, for example, as 317552400 + 202720644 = 17820^2 + 14238^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 520272999 and 520273017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520273043) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 12654 + ... + 34650.

Almost surely, 2^520273044 is an apocalyptic number.

520273044 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 520273044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (689395322).

520273044 is an abundant number, since it is smaller than the sum of its proper divisors (858517600).

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

520273044 is a wasteful number, since it uses less digits than its factorization.

520273044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22086 (or 22075 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 27.

The square root of 520273044 is about 22809.4946020292. The cubic root of 520273044 is about 804.2858751727.

The spelling of 520273044 in words is "five hundred twenty million, two hundred seventy-three thousand, forty-four".