60505581 has 4 divisors (see below), whose sum is σ = 80674112. Its totient is φ = 40337052.

The previous prime is 60505541. The next prime is 60505597. The reversal of 60505581 is 18550506.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 60505581 - 2⁷ = 60505453 is a prime.

It is a super-2 number, since 2×60505581² = 7321850664295122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (60505531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10084261 + ... + 10084266.

It is an arithmetic number, because the mean of its divisors is an integer number (20168528).

Almost surely, 2^60505581 is an apocalyptic number.

It is an amenable number.

60505581 is a deficient number, since it is larger than the sum of its proper divisors (20168531).

60505581 is a wasteful number, since it uses less digits than its factorization.

60505581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20168530.

The product of its (nonzero) digits is 6000, while the sum is 30.

The square root of 60505581 is about 7778.5333450465. The cubic root of 60505581 is about 392.5832914505.

The spelling of 60505581 in words is "sixty million, five hundred five thousand, five hundred eighty-one".