1085145571 has 2 divisors, whose sum is σ = 1085145572. Its totient is φ = 1085145570.

The previous prime is 1085145563. The next prime is 1085145623. The reversal of 1085145571 is 1755415801.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1085145571 - 2³ = 1085145563 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1085145571.

It is not a weakly prime, because it can be changed into another prime (1085145521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 542572785 + 542572786.

It is an arithmetic number, because the mean of its divisors is an integer number (542572786).

Almost surely, 2^1085145571 is an apocalyptic number.

1085145571 is a deficient number, since it is larger than the sum of its proper divisors (1).

1085145571 is an equidigital number, since it uses as much as digits as its factorization.

1085145571 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28000, while the sum is 37.

The square root of 1085145571 is about 32941.5477930227. The cubic root of 1085145571 is about 1027.6123950039.

The spelling of 1085145571 in words is "one billion, eighty-five million, one hundred forty-five thousand, five hundred seventy-one".