515030022 has 64 divisors (see below), whose sum is σ = 1240666560. Its totient is φ = 157427712.

The previous prime is 515029981. The next prime is 515030027. The reversal of 515030022 is 220030515.

It is a happy number.

It is a super-2 number, since 2×515030022² = 530511847122640968, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 515029977 and 515030004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (515030027) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 107878 + ... + 112550.

It is an arithmetic number, because the mean of its divisors is an integer number (19385415).

Almost surely, 2^515030022 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 515030022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (620333280).

515030022 is an abundant number, since it is smaller than the sum of its proper divisors (725636538).

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

515030022 is a wasteful number, since it uses less digits than its factorization.

515030022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4854 (or 4848 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 515030022 is about 22694.2728898725. The cubic root of 515030022 is about 801.5750335101.

Adding to 515030022 its reverse (220030515), we get a palindrome (735060537).

The spelling of 515030022 in words is "five hundred fifteen million, thirty thousand, twenty-two".