520144254 has 80 divisors (see below), whose sum is σ = 1363114368. Its totient is φ = 145142928.

The previous prime is 520144181. The next prime is 520144259. The reversal of 520144254 is 452441025.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520144259) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 43429 + ... + 54095.

Almost surely, 2^520144254 is an apocalyptic number.

520144254 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 520144254, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (681557184).

520144254 is an abundant number, since it is smaller than the sum of its proper divisors (842970114).

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

520144254 is a wasteful number, since it uses less digits than its factorization.

520144254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10731 (or 10722 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The square root of 520144254 is about 22806.6712608394. The cubic root of 520144254 is about 804.2195045574.

Adding to 520144254 its reverse (452441025), we get a palindrome (972585279).

It can be divided in two parts, 5201 and 44254, that added together give a triangular number (49455 = T₃₁₄).

The spelling of 520144254 in words is "five hundred twenty million, one hundred forty-four thousand, two hundred fifty-four".