7222641457 has 2 divisors, whose sum is σ = 7222641458. Its totient is φ = 7222641456.

The previous prime is 7222641443. The next prime is 7222641533. The reversal of 7222641457 is 7541462227.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7222280256 + 361201 = 84984^2 + 601^2 .

It is a cyclic number.

It is not a de Polignac number, because 7222641457 - 2¹⁹ = 7222117169 is a prime.

It is not a weakly prime, because it can be changed into another prime (7222641427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3611320728 + 3611320729.

It is an arithmetic number, because the mean of its divisors is an integer number (3611320729).

Almost surely, 2^7222641457 is an apocalyptic number.

It is an amenable number.

7222641457 is a deficient number, since it is larger than the sum of its proper divisors (1).

7222641457 is an equidigital number, since it uses as much as digits as its factorization.

7222641457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 188160, while the sum is 40.

The square root of 7222641457 is about 84986.1250852161. The cubic root of 7222641457 is about 1933.0007333085. Note that the first 3 decimals are identical.

The spelling of 7222641457 in words is "seven billion, two hundred twenty-two million, six hundred forty-one thousand, four hundred fifty-seven".