55259857152 has 144 divisors (see below), whose sum is σ = 164021679360. Its totient is φ = 18351360000.

The previous prime is 55259857139. The next prime is 55259857157. The reversal of 55259857152 is 25175895255.

55259857152 is a `hidden beast` number, since 552 + 5 + 9 + 85 + 7 + 1 + 5 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-2 number, since 2×55259857152² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (55259857157) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1858402 + ... + 1887902.

It is an arithmetic number, because the mean of its divisors is an integer number (1139039440).

Almost surely, 2^55259857152 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 55259857152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82010839680).

55259857152 is an abundant number, since it is smaller than the sum of its proper divisors (108761822208).

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

55259857152 is a wasteful number, since it uses less digits than its factorization.

55259857152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29797 (or 29777 counting only the distinct ones).

The product of its digits is 6300000, while the sum is 54.

The spelling of 55259857152 in words is "fifty-five billion, two hundred fifty-nine million, eight hundred fifty-seven thousand, one hundred fifty-two".