60221520 has 60 divisors (see below), whose sum is σ = 202246356. Its totient is φ = 16058880.

The previous prime is 60221509. The next prime is 60221527. The reversal of 60221520 is 2512206.

It can be written as a sum of positive squares in 2 ways, for example, as 6110784 + 54110736 = 2472^2 + 7356^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is a super-2 number, since 2×60221520² = 7253262942220800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 60221493 and 60221502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (60221527) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41101 + ... + 42540.

Almost surely, 2^60221520 is an apocalyptic number.

60221520 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

60221520 is an abundant number, since it is smaller than the sum of its proper divisors (142024836).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

60221520 is a wasteful number, since it uses less digits than its factorization.

60221520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83660 (or 83651 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 60221520 is about 7760.2525732092. The cubic root of 60221520 is about 391.9679621186.

Adding to 60221520 its reverse (2512206), we get a palindrome (62733726).

It can be divided in two parts, 602 and 21520, that added together give a palindrome (22122).

The spelling of 60221520 in words is "sixty million, two hundred twenty-one thousand, five hundred twenty".