280053265 has 12 divisors (see below), whose sum is σ = 338601564. Its totient is φ = 222356096.

The previous prime is 280053251. The next prime is 280053283. The reversal of 280053265 is 562350082.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 10863616 + 269189649 = 3296^2 + 16407^2 .

It is not a de Polignac number, because 280053265 - 2⁹ = 280052753 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 491901 + ... + 492469.

It is an arithmetic number, because the mean of its divisors is an integer number (28216797).

Almost surely, 2^280053265 is an apocalyptic number.

It is an amenable number.

280053265 is a deficient number, since it is larger than the sum of its proper divisors (58548299).

280053265 is an frugal number, since it uses more digits than its factorization.

280053265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1316 (or 747 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 280053265 is about 16734.7920512924. The cubic root of 280053265 is about 654.2547435377.

It can be divided in two parts, 2800 and 53265, that added together give a palindrome (56065).

The spelling of 280053265 in words is "two hundred eighty million, fifty-three thousand, two hundred sixty-five".