2756820257 has 16 divisors (see below), whose sum is σ = 3013781760. Its totient is φ = 2512862352.

The previous prime is 2756820233. The next prime is 2756820263. The reversal of 2756820257 is 7520286572.

It is a cyclic number.

It is not a de Polignac number, because 2756820257 - 2¹⁴ = 2756803873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2756840257) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29558 + ... + 79920.

It is an arithmetic number, because the mean of its divisors is an integer number (188361360).

Almost surely, 2^2756820257 is an apocalyptic number.

It is an amenable number.

2756820257 is a deficient number, since it is larger than the sum of its proper divisors (256961503).

2756820257 is a wasteful number, since it uses less digits than its factorization.

2756820257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50492.

The product of its (nonzero) digits is 470400, while the sum is 44.

The square root of 2756820257 is about 52505.4307381627. The cubic root of 2756820257 is about 1402.1769290475.

The spelling of 2756820257 in words is "two billion, seven hundred fifty-six million, eight hundred twenty thousand, two hundred fifty-seven".