511225530 has 32 divisors (see below), whose sum is σ = 1299115584. Its totient is φ = 128307456.

The previous prime is 511225487. The next prime is 511225549. The reversal of 511225530 is 35522115.

It is a happy number.

It is a super-2 number, since 2×511225530² = 522703085047561800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 511225530.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 500692 + ... + 501711.

It is an arithmetic number, because the mean of its divisors is an integer number (40597362).

Almost surely, 2^511225530 is an apocalyptic number.

511225530 is an abundant number, since it is smaller than the sum of its proper divisors (787890054).

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

511225530 is a wasteful number, since it uses less digits than its factorization.

511225530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1002430.

The product of its (nonzero) digits is 1500, while the sum is 24.

The square root of 511225530 is about 22610.2969905307. The cubic root of 511225530 is about 799.5964266533.

Adding to 511225530 its reverse (35522115), we get a palindrome (546747645).

The spelling of 511225530 in words is "five hundred eleven million, two hundred twenty-five thousand, five hundred thirty".