116561545 has 16 divisors (see below), whose sum is σ = 142647120. Its totient is φ = 91411200.

The previous prime is 116561531. The next prime is 116561567. The reversal of 116561545 is 545165611.

It can be written as a sum of positive squares in 8 ways, for example, as 19971961 + 96589584 = 4469^2 + 9828^2 .

It is not a de Polignac number, because 116561545 - 2¹⁷ = 116430473 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 116561545.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 140191 + ... + 141019.

It is an arithmetic number, because the mean of its divisors is an integer number (8915445).

Almost surely, 2^116561545 is an apocalyptic number.

It is an amenable number.

116561545 is a deficient number, since it is larger than the sum of its proper divisors (26085575).

116561545 is an equidigital number, since it uses as much as digits as its factorization.

116561545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1356.

The product of its digits is 18000, while the sum is 34.

The square root of 116561545 is about 10796.3672130953. The cubic root of 116561545 is about 488.4855992796.

The spelling of 116561545 in words is "one hundred sixteen million, five hundred sixty-one thousand, five hundred forty-five".