252244541440 has 60 divisors (see below), whose sum is σ = 605368621116. Its totient is φ = 100897783808.

The previous prime is 252244541401. The next prime is 252244541489. The reversal of 252244541440 is 44145442252.

It can be written as a sum of positive squares in 2 ways, for example, as 126713217024 + 125531324416 = 355968^2 + 354304^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 252244541440.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1457659 + ... + 1621498.

Almost surely, 2^252244541440 is an apocalyptic number.

252244541440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

252244541440 is an abundant number, since it is smaller than the sum of its proper divisors (353124079676).

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

252244541440 is an frugal number, since it uses more digits than its factorization.

252244541440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3079190 (or 3079164 counting only the distinct ones).

The product of its (nonzero) digits is 204800, while the sum is 37.

Adding to 252244541440 its reverse (44145442252), we get a palindrome (296389983692).

The spelling of 252244541440 in words is "two hundred fifty-two billion, two hundred forty-four million, five hundred forty-one thousand, four hundred forty".