4061221553 has 2 divisors, whose sum is σ = 4061221554. Its totient is φ = 4061221552.

The previous prime is 4061221531. The next prime is 4061221589. The reversal of 4061221553 is 3551221604.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2973739024 + 1087482529 = 54532^2 + 32977^2 .

It is a cyclic number.

It is not a de Polignac number, because 4061221553 - 2²⁴ = 4044444337 is a prime.

It is not a weakly prime, because it can be changed into another prime (4061221453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2030610776 + 2030610777.

It is an arithmetic number, because the mean of its divisors is an integer number (2030610777).

Almost surely, 2^4061221553 is an apocalyptic number.

It is an amenable number.

4061221553 is a deficient number, since it is larger than the sum of its proper divisors (1).

4061221553 is an equidigital number, since it uses as much as digits as its factorization.

4061221553 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 4061221553 is about 63727.7141673856. The cubic root of 4061221553 is about 1595.4586788266.

The spelling of 4061221553 in words is "four billion, sixty-one million, two hundred twenty-one thousand, five hundred fifty-three".