55142002520 has 64 divisors (see below), whose sum is σ = 136104883200. Its totient is φ = 19939588480.

The previous prime is 55142002453. The next prime is 55142002537. The reversal of 55142002520 is 2520024155.

It is a self number, because there is not a number n which added to its sum of digits gives 55142002520.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 271304 + ... + 428823.

It is an arithmetic number, because the mean of its divisors is an integer number (2126638800).

Almost surely, 2^55142002520 is an apocalyptic number.

It is an amenable number.

55142002520 is an abundant number, since it is smaller than the sum of its proper divisors (80962880680).

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

55142002520 is a wasteful number, since it uses less digits than its factorization.

55142002520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700328 (or 700324 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 26.

Adding to 55142002520 its reverse (2520024155), we get a palindrome (57662026675).

The spelling of 55142002520 in words is "fifty-five billion, one hundred forty-two million, two thousand, five hundred twenty".