2780280253 has 4 divisors (see below), whose sum is σ = 2839435200. Its totient is φ = 2721125308.

The previous prime is 2780280193. The next prime is 2780280271. The reversal of 2780280253 is 3520820872.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2780280253 - 2²¹ = 2778183101 is a prime.

It is a super-3 number, since 3×2780280253³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2780280053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29577403 + ... + 29577496.

It is an arithmetic number, because the mean of its divisors is an integer number (709858800).

Almost surely, 2^2780280253 is an apocalyptic number.

It is an amenable number.

2780280253 is a deficient number, since it is larger than the sum of its proper divisors (59154947).

2780280253 is an equidigital number, since it uses as much as digits as its factorization.

2780280253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59154946.

The product of its (nonzero) digits is 53760, while the sum is 37.

The square root of 2780280253 is about 52728.3628894355. The cubic root of 2780280253 is about 1406.1431160034.

The spelling of 2780280253 in words is "two billion, seven hundred eighty million, two hundred eighty thousand, two hundred fifty-three".