1061271505 has 32 divisors (see below), whose sum is σ = 1540028160. Its totient is φ = 685843200.

The previous prime is 1061271503. The next prime is 1061271571. The reversal of 1061271505 is 5051721601.

It is not a de Polignac number, because 1061271505 - 2¹ = 1061271503 is a prime.

It is a super-2 number, since 2×1061271505² = 2252594414649930050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1061271503) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 126955 + ... + 135055.

It is an arithmetic number, because the mean of its divisors is an integer number (48125880).

Almost surely, 2^1061271505 is an apocalyptic number.

It is an amenable number.

1061271505 is a deficient number, since it is larger than the sum of its proper divisors (478756655).

1061271505 is a wasteful number, since it uses less digits than its factorization.

1061271505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8329.

The product of its (nonzero) digits is 2100, while the sum is 28.

The square root of 1061271505 is about 32577.1623227070. The cubic root of 1061271505 is about 1020.0203459353.

The spelling of 1061271505 in words is "one billion, sixty-one million, two hundred seventy-one thousand, five hundred five".