551011530 has 32 divisors (see below), whose sum is σ = 1327363200. Its totient is φ = 146388032.

The previous prime is 551011501. The next prime is 551011543. The reversal of 551011530 is 35110155.

It is a super-2 number, since 2×551011530² = 607227412385881800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 551011497 and 551011506.

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, 26070 + ... + 42209.

It is an arithmetic number, because the mean of its divisors is an integer number (41480100).

Almost surely, 2^551011530 is an apocalyptic number.

551011530 is an abundant number, since it is smaller than the sum of its proper divisors (776351670).

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

551011530 is a wasteful number, since it uses less digits than its factorization.

551011530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68558.

The product of its (nonzero) digits is 375, while the sum is 21.

The square root of 551011530 is about 23473.6347845833. The cubic root of 551011530 is about 819.8232466542.

Adding to 551011530 its reverse (35110155), we get a palindrome (586121685).

The spelling of 551011530 in words is "five hundred fifty-one million, eleven thousand, five hundred thirty".