1071539 has 4 divisors (see below), whose sum is σ = 1224624. Its totient is φ = 918456.

The previous prime is 1071533. The next prime is 1071541. The reversal of 1071539 is 9351701.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9351701 = 971 ⋅9631.

It is not a de Polignac number, because 1071539 - 2⁸ = 1071283 is a prime.

It is a super-2 number, since 2×1071539² = 2296391657042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1071533) 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, 76532 + ... + 76545.

It is an arithmetic number, because the mean of its divisors is an integer number (306156).

2^1071539 is an apocalyptic number.

1071539 is a deficient number, since it is larger than the sum of its proper divisors (153085).

1071539 is an equidigital number, since it uses as much as digits as its factorization.

1071539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153084.

The product of its (nonzero) digits is 945, while the sum is 26.

The square root of 1071539 is about 1035.1516797069. The cubic root of 1071539 is about 102.3299261693.

The spelling of 1071539 in words is "one million, seventy-one thousand, five hundred thirty-nine".