1061111545 has 8 divisors (see below), whose sum is σ = 1371282696. Its totient is φ = 783590016.

The previous prime is 1061111507. The next prime is 1061111549. The reversal of 1061111545 is 5451111601.

It can be written as a sum of positive squares in 4 ways, for example, as 436921 + 1060674624 = 661^2 + 32568^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1061111545 is a prime.

It is a super-2 number, since 2×1061111545² = 2251915421864574050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1061111549) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8162332 + ... + 8162461.

It is an arithmetic number, because the mean of its divisors is an integer number (171410337).

Almost surely, 2^1061111545 is an apocalyptic number.

It is an amenable number.

1061111545 is a deficient number, since it is larger than the sum of its proper divisors (310171151).

1061111545 is a wasteful number, since it uses less digits than its factorization.

1061111545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16324811.

The product of its (nonzero) digits is 600, while the sum is 25.

The square root of 1061111545 is about 32574.7071360588. The cubic root of 1061111545 is about 1019.9690958854.

The spelling of 1061111545 in words is "one billion, sixty-one million, one hundred eleven thousand, five hundred forty-five".