551420430 has 32 divisors (see below), whose sum is σ = 1443719808. Its totient is φ = 133677600.

The previous prime is 551420417. The next prime is 551420461. The reversal of 551420430 is 34024155.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 551420430.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 835156 + ... + 835815.

It is an arithmetic number, because the mean of its divisors is an integer number (45116244).

Almost surely, 2^551420430 is an apocalyptic number.

551420430 is an abundant number, since it is smaller than the sum of its proper divisors (892299378).

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

551420430 is a wasteful number, since it uses less digits than its factorization.

551420430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1670992.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 551420430 is about 23482.3429410270. The cubic root of 551420430 is about 820.0259906495.

Adding to 551420430 its reverse (34024155), we get a palindrome (585444585).

The spelling of 551420430 in words is "five hundred fifty-one million, four hundred twenty thousand, four hundred thirty".