7227376561 has 4 divisors (see below), whose sum is σ = 7228336500. Its totient is φ = 7226416624.

The previous prime is 7227376531. The next prime is 7227376573. The reversal of 7227376561 is 1656737227.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1656737227 = 17 ⋅97455131.

It can be written as a sum of positive squares in 2 ways, for example, as 3231240336 + 3996136225 = 56844^2 + 63215^2 .

It is a cyclic number.

It is not a de Polignac number, because 7227376561 - 2¹⁵ = 7227343793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7227376531) 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, 468586 + ... + 483763.

It is an arithmetic number, because the mean of its divisors is an integer number (1807084125).

Almost surely, 2^7227376561 is an apocalyptic number.

It is an amenable number.

7227376561 is a deficient number, since it is larger than the sum of its proper divisors (959939).

7227376561 is an equidigital number, since it uses as much as digits as its factorization.

7227376561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 959938.

The product of its digits is 740880, while the sum is 46.

The square root of 7227376561 is about 85013.9786211656. The cubic root of 7227376561 is about 1933.4230607947.

The spelling of 7227376561 in words is "seven billion, two hundred twenty-seven million, three hundred seventy-six thousand, five hundred sixty-one".