60111561 has 8 divisors (see below), whose sum is σ = 80365120. Its totient is φ = 39966192.

The previous prime is 60111553. The next prime is 60111563. The reversal of 60111561 is 16511106.

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

It is not a de Polignac number, because 60111561 - 2³ = 60111553 is a prime.

It is a super-2 number, since 2×60111561² = 7226799531713442, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (60111563) 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, 25741 + ... + 27978.

It is an arithmetic number, because the mean of its divisors is an integer number (10045640).

Almost surely, 2^60111561 is an apocalyptic number.

It is an amenable number.

60111561 is a deficient number, since it is larger than the sum of its proper divisors (20253559).

60111561 is a wasteful number, since it uses less digits than its factorization.

60111561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54095.

The product of its (nonzero) digits is 180, while the sum is 21.

The square root of 60111561 is about 7753.1645797055. The cubic root of 60111561 is about 391.7292508613.

Adding to 60111561 its reverse (16511106), we get a palindrome (76622667).

The spelling of 60111561 in words is "sixty million, one hundred eleven thousand, five hundred sixty-one".