60221581 has 8 divisors (see below), whose sum is σ = 68984960. Its totient is φ = 51498288.

The previous prime is 60221573. The next prime is 60221587. The reversal of 60221581 is 18512206.

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 60221581 - 2³ = 60221573 is a prime.

It is a super-2 number, since 2×60221581² = 7253277636279122, 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 (60221587) 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, 6726 + ... + 12871.

It is an arithmetic number, because the mean of its divisors is an integer number (8623120).

Almost surely, 2^60221581 is an apocalyptic number.

It is an amenable number.

60221581 is a deficient number, since it is larger than the sum of its proper divisors (8763379).

60221581 is a wasteful number, since it uses less digits than its factorization.

60221581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20043.

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 60221581 is about 7760.2565034927. The cubic root of 60221581 is about 391.9680944635.

Adding to 60221581 its reverse (18512206), we get a palindrome (78733787).

The spelling of 60221581 in words is "sixty million, two hundred twenty-one thousand, five hundred eighty-one".