551111430 has 32 divisors (see below), whose sum is σ = 1326027744. Its totient is φ = 146589696.

The previous prime is 551111419. The next prime is 551111489. The reversal of 551111430 is 34111155.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 551111397 and 551111406.

It is a congruent number.

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, 11227 + ... + 35046.

It is an arithmetic number, because the mean of its divisors is an integer number (41438367).

Almost surely, 2^551111430 is an apocalyptic number.

551111430 is an abundant number, since it is smaller than the sum of its proper divisors (774916314).

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

551111430 is a wasteful number, since it uses less digits than its factorization.

551111430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46680.

The product of its (nonzero) digits is 300, while the sum is 21.

The square root of 551111430 is about 23475.7626074213. The cubic root of 551111430 is about 819.8727891101.

Adding to 551111430 its reverse (34111155), we get a palindrome (585222585).

The spelling of 551111430 in words is "five hundred fifty-one million, one hundred eleven thousand, four hundred thirty".