511302020 has 12 divisors (see below), whose sum is σ = 1073734284. Its totient is φ = 204520800.

The previous prime is 511302017. The next prime is 511302023. The reversal of 511302020 is 20203115.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (511302017) and next prime (511302023).

It can be written as a sum of positive squares in 2 ways, for example, as 220463104 + 290838916 = 14848^2 + 17054^2 .

It is a super-2 number, since 2×511302020² = 522859511312160800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 511301986 and 511302004.

It is not an unprimeable number, because it can be changed into a prime (511302023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12782531 + ... + 12782570.

It is an arithmetic number, because the mean of its divisors is an integer number (89477857).

Almost surely, 2^511302020 is an apocalyptic number.

It is an amenable number.

511302020 is an abundant number, since it is smaller than the sum of its proper divisors (562432264).

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

511302020 is a wasteful number, since it uses less digits than its factorization.

511302020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25565110 (or 25565108 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 511302020 is about 22611.9884132289. The cubic root of 511302020 is about 799.6363034311.

Adding to 511302020 its reverse (20203115), we get a palindrome (531505135).

The spelling of 511302020 in words is "five hundred eleven million, three hundred two thousand, twenty".