2720567251 has 4 divisors (see below), whose sum is σ = 2726879904. Its totient is φ = 2714254600.

The previous prime is 2720567237. The next prime is 2720567261. The reversal of 2720567251 is 1527650272.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2720567251 - 2²⁵ = 2687012819 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2720567251.

It is not an unprimeable number, because it can be changed into a prime (2720567261) 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, 3155680 + ... + 3156541.

It is an arithmetic number, because the mean of its divisors is an integer number (681719976).

Almost surely, 2^2720567251 is an apocalyptic number.

2720567251 is a deficient number, since it is larger than the sum of its proper divisors (6312653).

2720567251 is an equidigital number, since it uses as much as digits as its factorization.

2720567251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6312652.

The product of its (nonzero) digits is 58800, while the sum is 37.

The square root of 2720567251 is about 52159.0572288265. The cubic root of 2720567251 is about 1396.0034405421.

The spelling of 2720567251 in words is "two billion, seven hundred twenty million, five hundred sixty-seven thousand, two hundred fifty-one".