61135563 has 8 divisors (see below), whose sum is σ = 81598608. Its totient is φ = 40714784.

The previous prime is 61135561. The next prime is 61135577. The reversal of 61135563 is 36553116.

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

It is a cyclic number.

It is not a de Polignac number, because 61135563 - 2¹ = 61135561 is a prime.

It is a super-3 number, since 3×61135563³ (a number of 24 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 61135563.

It is not an unprimeable number, because it can be changed into a prime (61135561) 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, 7020 + ... + 13097.

It is an arithmetic number, because the mean of its divisors is an integer number (10199826).

Almost surely, 2^61135563 is an apocalyptic number.

61135563 is a deficient number, since it is larger than the sum of its proper divisors (20463045).

61135563 is a wasteful number, since it uses less digits than its factorization.

61135563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21133.

The product of its digits is 8100, while the sum is 30.

The square root of 61135563 is about 7818.9233913628. The cubic root of 61135563 is about 393.9411109561.

Adding to 61135563 its reverse (36553116), we get a palindrome (97688679).

The spelling of 61135563 in words is "sixty-one million, one hundred thirty-five thousand, five hundred sixty-three".