220520061 has 24 divisors (see below), whose sum is σ = 336747840. Its totient is φ = 138672000.

The previous prime is 220520033. The next prime is 220520087. The reversal of 220520061 is 160025022.

It is not a de Polignac number, because 220520061 - 2⁶ = 220519997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220520011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38536 + ... + 43886.

It is an arithmetic number, because the mean of its divisors is an integer number (14031160).

Almost surely, 2^220520061 is an apocalyptic number.

It is an amenable number.

220520061 is a deficient number, since it is larger than the sum of its proper divisors (116227779).

220520061 is a wasteful number, since it uses less digits than its factorization.

220520061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5617 (or 5614 counting only the distinct ones).

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

The square root of 220520061 is about 14849.9178785608. The cubic root of 220520061 is about 604.1563826539.

Adding to 220520061 its reverse (160025022), we get a palindrome (380545083).

The spelling of 220520061 in words is "two hundred twenty million, five hundred twenty thousand, sixty-one".