1071545 has 4 divisors (see below), whose sum is σ = 1285860. Its totient is φ = 857232.

The previous prime is 1071541. The next prime is 1071563. The reversal of 1071545 is 5451701.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 157609 + 913936 = 397^2 + 956^2 .

It is a cyclic number.

It is not a de Polignac number, because 1071545 - 2² = 1071541 is a prime.

It is a super-2 number, since 2×1071545² = 2296417374050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1071545.

It is not an unprimeable number, because it can be changed into a prime (1071541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107150 + ... + 107159.

It is an arithmetic number, because the mean of its divisors is an integer number (321465).

2^1071545 is an apocalyptic number.

It is an amenable number.

1071545 is a deficient number, since it is larger than the sum of its proper divisors (214315).

1071545 is an equidigital number, since it uses as much as digits as its factorization.

1071545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214314.

The product of its (nonzero) digits is 700, while the sum is 23.

The square root of 1071545 is about 1035.1545778288. The cubic root of 1071545 is about 102.3301171651.

The spelling of 1071545 in words is "one million, seventy-one thousand, five hundred forty-five".