511122040 has 128 divisors (see below), whose sum is σ = 1422489600. Its totient is φ = 162501120.

The previous prime is 511122011. The next prime is 511122047. The reversal of 511122040 is 40221115.

It is a super-2 number, since 2×511122040² = 522491479547523200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (511122047) 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 31 ways as a sum of consecutive naturals, for example, 106329 + ... + 111031.

It is an arithmetic number, because the mean of its divisors is an integer number (11113200).

Almost surely, 2^511122040 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 511122040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (711244800).

511122040 is an abundant number, since it is smaller than the sum of its proper divisors (911367560).

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

511122040 is a wasteful number, since it uses less digits than its factorization.

511122040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4757 (or 4753 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 511122040 is about 22608.0083156390. The cubic root of 511122040 is about 799.5424675466.

Adding to 511122040 its reverse (40221115), we get a palindrome (551343155).

The spelling of 511122040 in words is "five hundred eleven million, one hundred twenty-two thousand, forty".