60556221 has 32 divisors (see below), whose sum is σ = 100275840. Its totient is φ = 35798400.

The previous prime is 60556183. The next prime is 60556231. The reversal of 60556221 is 12265506.

60556221 is a `hidden beast` number, since 605 + 56 + 2 + 2 + 1 = 666.

It is not a de Polignac number, because 60556221 - 2¹⁰ = 60555197 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (60556231) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9691 + ... + 14663.

It is an arithmetic number, because the mean of its divisors is an integer number (3133620).

Almost surely, 2^60556221 is an apocalyptic number.

It is an amenable number.

60556221 is a deficient number, since it is larger than the sum of its proper divisors (39719619).

60556221 is a wasteful number, since it uses less digits than its factorization.

60556221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5034 (or 5028 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 60556221 is about 7781.7877765974. The cubic root of 60556221 is about 392.6927847889.

The spelling of 60556221 in words is "sixty million, five hundred fifty-six thousand, two hundred twenty-one".