1145571 has 12 divisors (see below), whose sum is σ = 1777032. Its totient is φ = 654528.

The previous prime is 1145539. The next prime is 1145593. The reversal of 1145571 is 1755411.

It is not a de Polignac number, because 1145571 - 2⁵ = 1145539 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1145371) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3750 + ... + 4043.

It is an arithmetic number, because the mean of its divisors is an integer number (148086).

2^1145571 is an apocalyptic number.

1145571 is a deficient number, since it is larger than the sum of its proper divisors (631461).

1145571 is an equidigital number, since it uses as much as digits as its factorization.

1145571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7810 (or 7803 counting only the distinct ones).

The product of its digits is 700, while the sum is 24.

The square root of 1145571 is about 1070.3135054740. The cubic root of 1145571 is about 104.6342832368.

The spelling of 1145571 in words is "one million, one hundred forty-five thousand, five hundred seventy-one".