1043655553 has 2 divisors, whose sum is σ = 1043655554. Its totient is φ = 1043655552.

The previous prime is 1043655511. The next prime is 1043655601. The reversal of 1043655553 is 3555563401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 937400689 + 106254864 = 30617^2 + 10308^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1043655553 is a prime.

It is not a weakly prime, because it can be changed into another prime (1043655953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 521827776 + 521827777.

It is an arithmetic number, because the mean of its divisors is an integer number (521827777).

Almost surely, 2^1043655553 is an apocalyptic number.

It is an amenable number.

1043655553 is a deficient number, since it is larger than the sum of its proper divisors (1).

1043655553 is an equidigital number, since it uses as much as digits as its factorization.

1043655553 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 135000, while the sum is 37.

The square root of 1043655553 is about 32305.6582195751. The cubic root of 1043655553 is about 1014.3450855366.

The spelling of 1043655553 in words is "one billion, forty-three million, six hundred fifty-five thousand, five hundred fifty-three".