1085557043 has 2 divisors, whose sum is σ = 1085557044. Its totient is φ = 1085557042.

The previous prime is 1085556919. The next prime is 1085557061. The reversal of 1085557043 is 3407555801.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1085557043 - 2¹⁰ = 1085556019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1085556988 and 1085557006.

It is not a weakly prime, because it can be changed into another prime (1085577043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 542778521 + 542778522.

It is an arithmetic number, because the mean of its divisors is an integer number (542778522).

Almost surely, 2^1085557043 is an apocalyptic number.

1085557043 is a deficient number, since it is larger than the sum of its proper divisors (1).

1085557043 is an equidigital number, since it uses as much as digits as its factorization.

1085557043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84000, while the sum is 38.

The square root of 1085557043 is about 32947.7926878266. The cubic root of 1085557043 is about 1027.7422639990.

The spelling of 1085557043 in words is "one billion, eighty-five million, five hundred fifty-seven thousand, forty-three".