55001010520 has 128 divisors (see below), whose sum is σ = 133145026560. Its totient is φ = 20373534720.

The previous prime is 55001010511. The next prime is 55001010523. The reversal of 55001010520 is 2501010055.

It is a super-2 number, since 2×55001010520² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55001010523) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35098777 + ... + 35100343.

It is an arithmetic number, because the mean of its divisors is an integer number (1040195520).

Almost surely, 2^55001010520 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55001010520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66572513280).

55001010520 is an abundant number, since it is smaller than the sum of its proper divisors (78144016040).

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

55001010520 is a wasteful number, since it uses less digits than its factorization.

55001010520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2393 (or 2389 counting only the distinct ones).

The product of its (nonzero) digits is 250, while the sum is 19.

Adding to 55001010520 its reverse (2501010055), we get a palindrome (57502020575).

The spelling of 55001010520 in words is "fifty-five billion, one million, ten thousand, five hundred twenty".