506555620 has 24 divisors (see below), whose sum is σ = 1066311288. Its totient is φ = 202137600.

The previous prime is 506555603. The next prime is 506555627. The reversal of 506555620 is 26555605.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 32012964 + 474542656 = 5658^2 + 21784^2 .

It is not an unprimeable number, because it can be changed into a prime (506555627) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21661 + ... + 38500.

It is an arithmetic number, because the mean of its divisors is an integer number (44429637).

Almost surely, 2^506555620 is an apocalyptic number.

It is an amenable number.

506555620 is an abundant number, since it is smaller than the sum of its proper divisors (559755668).

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

506555620 is a wasteful number, since it uses less digits than its factorization.

506555620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60591 (or 60589 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 34.

The square root of 506555620 is about 22506.7905308598. The cubic root of 506555620 is about 797.1542747289.

The spelling of 506555620 in words is "five hundred six million, five hundred fifty-five thousand, six hundred twenty".