7421755441 has 2 divisors, whose sum is σ = 7421755442. Its totient is φ = 7421755440.

The previous prime is 7421755387. The next prime is 7421755463. The reversal of 7421755441 is 1445571247.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5773720225 + 1648035216 = 75985^2 + 40596^2 .

It is a cyclic number.

It is not a de Polignac number, because 7421755441 - 2²³ = 7413366833 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7421755394 and 7421755403.

It is not a weakly prime, because it can be changed into another prime (7421755141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3710877720 + 3710877721.

It is an arithmetic number, because the mean of its divisors is an integer number (3710877721).

Almost surely, 2^7421755441 is an apocalyptic number.

It is an amenable number.

7421755441 is a deficient number, since it is larger than the sum of its proper divisors (1).

7421755441 is an equidigital number, since it uses as much as digits as its factorization.

7421755441 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 156800, while the sum is 40.

The square root of 7421755441 is about 86149.6108000495. The cubic root of 7421755441 is about 1950.6029641833.

The spelling of 7421755441 in words is "seven billion, four hundred twenty-one million, seven hundred fifty-five thousand, four hundred forty-one".