551222540 has 24 divisors (see below), whose sum is σ = 1262801232. Its totient is φ = 200444480.

The previous prime is 551222537. The next prime is 551222543. The reversal of 551222540 is 45222155.

551222540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (551222537) and next prime (551222543).

It is not an unprimeable number, because it can be changed into a prime (551222543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1252559 + ... + 1252998.

It is an arithmetic number, because the mean of its divisors is an integer number (52616718).

Almost surely, 2^551222540 is an apocalyptic number.

It is an amenable number.

551222540 is an abundant number, since it is smaller than the sum of its proper divisors (711578692).

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

551222540 is a wasteful number, since it uses less digits than its factorization.

551222540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2505577 (or 2505575 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 551222540 is about 23478.1289714492. The cubic root of 551222540 is about 819.9278838026.

Adding to 551222540 its reverse (45222155), we get a palindrome (596444695).

The spelling of 551222540 in words is "five hundred fifty-one million, two hundred twenty-two thousand, five hundred forty".