60172221 has 16 divisors (see below), whose sum is σ = 85615040. Its totient is φ = 37480320.

The previous prime is 60172139. The next prime is 60172223. The reversal of 60172221 is 12227106.

It is not a de Polignac number, because 60172221 - 2¹³ = 60164029 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (60172223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3070 + ... + 11391.

It is an arithmetic number, because the mean of its divisors is an integer number (5350940).

Almost surely, 2^60172221 is an apocalyptic number.

It is an amenable number.

60172221 is a deficient number, since it is larger than the sum of its proper divisors (25442819).

60172221 is a wasteful number, since it uses less digits than its factorization.

60172221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14556.

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 60172221 is about 7757.0755443015. The cubic root of 60172221 is about 391.8609743180.

Adding to 60172221 its reverse (12227106), we get a palindrome (72399327).

The spelling of 60172221 in words is "sixty million, one hundred seventy-two thousand, two hundred twenty-one".