551242340 has 48 divisors (see below), whose sum is σ = 1337140224. Its totient is φ = 188659200.

The previous prime is 551242339. The next prime is 551242343. The reversal of 551242340 is 43242155.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (551242343) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 69956 + ... + 77435.

It is an arithmetic number, because the mean of its divisors is an integer number (27857088).

Almost surely, 2^551242340 is an apocalyptic number.

It is an amenable number.

551242340 is an abundant number, since it is smaller than the sum of its proper divisors (785897884).

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

551242340 is a wasteful number, since it uses less digits than its factorization.

551242340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147428 (or 147426 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 551242340 is about 23478.5506366982. The cubic root of 551242340 is about 819.9377009977.

Adding to 551242340 its reverse (43242155), we get a palindrome (594484495).

The spelling of 551242340 in words is "five hundred fifty-one million, two hundred forty-two thousand, three hundred forty".