551430342 has 20 divisors (see below), whose sum is σ = 1235612796. Its totient is φ = 183810060.

The previous prime is 551430329. The next prime is 551430371. The reversal of 551430342 is 243034155.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1701784 + ... + 1702107.

Almost surely, 2^551430342 is an apocalyptic number.

551430342 is an abundant number, since it is smaller than the sum of its proper divisors (684182454).

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

551430342 is a wasteful number, since it uses less digits than its factorization.

551430342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3403905 (or 3403896 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 551430342 is about 23482.5539922726. The cubic root of 551430342 is about 820.0309040504.

Adding to 551430342 its reverse (243034155), we get a palindrome (794464497).

The spelling of 551430342 in words is "five hundred fifty-one million, four hundred thirty thousand, three hundred forty-two".