55212367240 has 16 divisors (see below), whose sum is σ = 124227826380. Its totient is φ = 22084946880.

The previous prime is 55212367213. The next prime is 55212367277. The reversal of 55212367240 is 4276321255.

It can be written as a sum of positive squares in 2 ways, for example, as 55207141444 + 5225796 = 234962^2 + 2286^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 55212367240.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 690154551 + ... + 690154630.

Almost surely, 2^55212367240 is an apocalyptic number.

It is an amenable number.

55212367240 is an abundant number, since it is smaller than the sum of its proper divisors (69015459140).

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

55212367240 is a wasteful number, since it uses less digits than its factorization.

55212367240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1380309192 (or 1380309188 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 37.

Adding to 55212367240 its reverse (4276321255), we get a palindrome (59488688495).

The spelling of 55212367240 in words is "fifty-five billion, two hundred twelve million, three hundred sixty-seven thousand, two hundred forty".