551222210502 has 32 divisors (see below), whose sum is σ = 1225893144960. Its totient is φ = 183597501960.

The previous prime is 551222210447. The next prime is 551222210509. The reversal of 551222210502 is 205012222155.

It is a happy number.

551222210502 is a `hidden beast` number, since 5 + 5 + 122 + 22 + 10 + 502 = 666.

It is a super-2 number, since 2×551222210502² (a number of 24 digits) contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551222210509) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3908824 + ... + 4047387.

It is an arithmetic number, because the mean of its divisors is an integer number (38309160780).

Almost surely, 2^551222210502 is an apocalyptic number.

551222210502 is an abundant number, since it is smaller than the sum of its proper divisors (674670934458).

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

551222210502 is a wasteful number, since it uses less digits than its factorization.

551222210502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7957505 (or 7957499 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

Adding to 551222210502 its reverse (205012222155), we get a palindrome (756234432657).

The spelling of 551222210502 in words is "five hundred fifty-one billion, two hundred twenty-two million, two hundred ten thousand, five hundred two".