551038420 has 24 divisors (see below), whose sum is σ = 1158595200. Its totient is φ = 220145952.

The previous prime is 551038409. The next prime is 551038451. The reversal of 551038420 is 24830155.

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 7 ways as a sum of consecutive naturals, for example, 361 + ... + 33199.

It is an arithmetic number, because the mean of its divisors is an integer number (48274800).

Almost surely, 2^551038420 is an apocalyptic number.

It is an amenable number.

551038420 is an abundant number, since it is smaller than the sum of its proper divisors (607556780).

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

551038420 is a wasteful number, since it uses less digits than its factorization.

551038420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33687 (or 33685 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 551038420 is about 23474.2075478598. The cubic root of 551038420 is about 819.8365825448.

Adding to 551038420 its reverse (24830155), we get a palindrome (575868575).

The spelling of 551038420 in words is "five hundred fifty-one million, thirty-eight thousand, four hundred twenty".