2272520661 has 16 divisors (see below), whose sum is σ = 3070179840. Its totient is φ = 1494981360.

The previous prime is 2272520651. The next prime is 2272520671. The reversal of 2272520661 is 1660252722.

It is an interprime number because it is at equal distance from previous prime (2272520651) and next prime (2272520671).

It is not a de Polignac number, because 2272520661 - 2¹³ = 2272512469 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2272520651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 223866 + ... + 233796.

It is an arithmetic number, because the mean of its divisors is an integer number (191886240).

Almost surely, 2^2272520661 is an apocalyptic number.

It is an amenable number.

2272520661 is a deficient number, since it is larger than the sum of its proper divisors (797659179).

2272520661 is an equidigital number, since it uses as much as digits as its factorization.

2272520661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10936.

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 2272520661 is about 47670.9624509512. The cubic root of 2272520661 is about 1314.7281044740.

The spelling of 2272520661 in words is "two billion, two hundred seventy-two million, five hundred twenty thousand, six hundred sixty-one".