1071045517 has 4 divisors (see below), whose sum is σ = 1071209980. Its totient is φ = 1070881056.

The previous prime is 1071045473. The next prime is 1071045533. The reversal of 1071045517 is 7155401701.

It is a happy number.

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 156225001 + 914820516 = 12499^2 + 30246^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1071045517 is a prime.

It is a super-2 number, since 2×1071045517² = 2294276998971594578, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1071045817) 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, 72042 + ... + 85627.

It is an arithmetic number, because the mean of its divisors is an integer number (267802495).

Almost surely, 2^1071045517 is an apocalyptic number.

It is an amenable number.

1071045517 is a deficient number, since it is larger than the sum of its proper divisors (164463).

1071045517 is an equidigital number, since it uses as much as digits as its factorization.

1071045517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164462.

The product of its (nonzero) digits is 4900, while the sum is 31.

The square root of 1071045517 is about 32726.8317592767. The cubic root of 1071045517 is about 1023.1421486279.

The spelling of 1071045517 in words is "one billion, seventy-one million, forty-five thousand, five hundred seventeen".