2757056781 has 8 divisors (see below), whose sum is σ = 3680834400. Its totient is φ = 1835658512.

The previous prime is 2757056683. The next prime is 2757056789. The reversal of 2757056781 is 1876507572.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2757056781 - 2¹⁷ = 2756925709 is a prime.

It is a super-2 number, since 2×2757056781² = 15202724187316163922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2757056781.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2757056789) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 592131 + ... + 596768.

It is an arithmetic number, because the mean of its divisors is an integer number (460104300).

Almost surely, 2^2757056781 is an apocalyptic number.

It is an amenable number.

2757056781 is a deficient number, since it is larger than the sum of its proper divisors (923777619).

2757056781 is a wasteful number, since it uses less digits than its factorization.

2757056781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1189675.

The product of its (nonzero) digits is 823200, while the sum is 48.

The square root of 2757056781 is about 52507.6830663856. The cubic root of 2757056781 is about 1402.2170282658.

The spelling of 2757056781 in words is "two billion, seven hundred fifty-seven million, fifty-six thousand, seven hundred eighty-one".