55051311252 has 144 divisors (see below), whose sum is σ = 151145362368. Its totient is φ = 15548520960.

The previous prime is 55051311199. The next prime is 55051311253. The reversal of 55051311252 is 25211315055.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55051311253) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 53918502 + ... + 53919522.

It is an arithmetic number, because the mean of its divisors is an integer number (1049620572).

Almost surely, 2^55051311252 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 55051311252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75572681184).

55051311252 is an abundant number, since it is smaller than the sum of its proper divisors (96094051116).

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

55051311252 is a wasteful number, since it uses less digits than its factorization.

55051311252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2006 (or 1997 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 30.

The spelling of 55051311252 in words is "fifty-five billion, fifty-one million, three hundred eleven thousand, two hundred fifty-two".