2753005781 has 4 divisors (see below), whose sum is σ = 2756793312. Its totient is φ = 2749218252.

The previous prime is 2753005771. The next prime is 2753005811. The reversal of 2753005781 is 1875003572.

It is a happy number.

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 a de Polignac number, because none of the positive numbers 2^k-2753005781 is a prime.

It is a super-2 number, since 2×2753005781² = 15158081660438839922, which contains 22 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 (2753005771) 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, 1892675 + ... + 1894128.

It is an arithmetic number, because the mean of its divisors is an integer number (689198328).

Almost surely, 2^2753005781 is an apocalyptic number.

It is an amenable number.

2753005781 is a deficient number, since it is larger than the sum of its proper divisors (3787531).

2753005781 is an equidigital number, since it uses as much as digits as its factorization.

2753005781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3787530.

The product of its (nonzero) digits is 58800, while the sum is 38.

The square root of 2753005781 is about 52469.0935789823. The cubic root of 2753005781 is about 1401.5299228962.

The spelling of 2753005781 in words is "two billion, seven hundred fifty-three million, five thousand, seven hundred eighty-one".