55342251513 has 36 divisors (see below), whose sum is σ = 83320401060. Its totient is φ = 36756506592.

The previous prime is 55342251509. The next prime is 55342251521. The reversal of 55342251513 is 31515224355.

55342251513 is a `hidden beast` number, since 5 + 53 + 42 + 2 + 51 + 513 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 20392696809 + 34949554704 = 142803^2 + 186948^2 .

It is not a de Polignac number, because 55342251513 - 2² = 55342251509 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55342251593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1749231 + ... + 1780587.

It is an arithmetic number, because the mean of its divisors is an integer number (2314455585).

Almost surely, 2^55342251513 is an apocalyptic number.

It is an amenable number.

55342251513 is a deficient number, since it is larger than the sum of its proper divisors (27978149547).

55342251513 is an frugal number, since it uses more digits than its factorization.

55342251513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31650 (or 31629 counting only the distinct ones).

The product of its digits is 90000, while the sum is 36.

Adding to 55342251513 its reverse (31515224355), we get a palindrome (86857475868).

The spelling of 55342251513 in words is "fifty-five billion, three hundred forty-two million, two hundred fifty-one thousand, five hundred thirteen".