55251122542540 has 24 divisors (see below), whose sum is σ = 116027653084560. Its totient is φ = 22100392684608.

The previous prime is 55251122542523. The next prime is 55251122542571. The reversal of 55251122542540 is 4524522115255.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5028114 + ... + 11652646.

It is an arithmetic number, because the mean of its divisors is an integer number (4834485545190).

Almost surely, 2^{55251122542540} is an apocalyptic number.

It is an amenable number.

55251122542540 is an abundant number, since it is smaller than the sum of its proper divisors (60776530542020).

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

55251122542540 is a wasteful number, since it uses less digits than its factorization.

55251122542540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7041561 (or 7041559 counting only the distinct ones).

The product of its (nonzero) digits is 800000, while the sum is 43.

Adding to 55251122542540 its reverse (4524522115255), we get a palindrome (59775644657795).

The spelling of 55251122542540 in words is "fifty-five trillion, two hundred fifty-one billion, one hundred twenty-two million, five hundred forty-two thousand, five hundred forty".