51240301543550 has 48 divisors (see below), whose sum is σ = 108942948624672. Its totient is φ = 17564763446400.

The previous prime is 51240301543549. The next prime is 51240301543579. The reversal of 51240301543550 is 5534510304215.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12072437 + ... + 15755136.

It is an arithmetic number, because the mean of its divisors is an integer number (2269644763014).

Almost surely, 2^{51240301543550} is an apocalyptic number.

51240301543550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51240301543550 is an abundant number, since it is smaller than the sum of its proper divisors (57702647081122).

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

51240301543550 is a wasteful number, since it uses less digits than its factorization.

51240301543550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27832853 (or 27832848 counting only the distinct ones).

The product of its (nonzero) digits is 180000, while the sum is 38.

Adding to 51240301543550 its reverse (5534510304215), we get a palindrome (56774811847765).

The spelling of 51240301543550 in words is "fifty-one trillion, two hundred forty billion, three hundred one million, five hundred forty-three thousand, five hundred fifty".