1061561560 has 32 divisors (see below), whose sum is σ = 2398964400. Its totient is φ = 422766720.

The previous prime is 1061561533. The next prime is 1061561581. The reversal of 1061561560 is 651651601.

1061561560 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1061561560² = 2253825891339267200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48786 + ... + 67105.

Almost surely, 2^1061561560 is an apocalyptic number.

1061561560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1061561560 is an abundant number, since it is smaller than the sum of its proper divisors (1337402840).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1061561560 is a wasteful number, since it uses less digits than its factorization.

1061561560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116131 (or 116127 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 1061561560 is about 32581.6138335718. The cubic root of 1061561560 is about 1020.1132643670.

The spelling of 1061561560 in words is "one billion, sixty-one million, five hundred sixty-one thousand, five hundred sixty".