601551220 has 12 divisors (see below), whose sum is σ = 1263257604. Its totient is φ = 240620480.

The previous prime is 601551211. The next prime is 601551241. The reversal of 601551220 is 22155106.

It can be written as a sum of positive squares in 2 ways, for example, as 288048784 + 313502436 = 16972^2 + 17706^2 .

It is a junction number, because it is equal to n+sod(n) for n = 601551191 and 601551200.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 15038761 + ... + 15038800.

It is an arithmetic number, because the mean of its divisors is an integer number (105271467).

Almost surely, 2^601551220 is an apocalyptic number.

It is an amenable number.

601551220 is an abundant number, since it is smaller than the sum of its proper divisors (661706384).

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

601551220 is a wasteful number, since it uses less digits than its factorization.

601551220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30077570 (or 30077568 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 601551220 is about 24526.5411340450. The cubic root of 601551220 is about 844.1589006987.

The spelling of 601551220 in words is "six hundred one million, five hundred fifty-one thousand, two hundred twenty".