55270012 has 48 divisors (see below), whose sum is σ = 121443840. Its totient is φ = 21460032.

The previous prime is 55270003. The next prime is 55270013. The reversal of 55270012 is 21007255.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55270013) 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, 9978 + ... + 14494.

It is an arithmetic number, because the mean of its divisors is an integer number (2530080).

Almost surely, 2^55270012 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 55270012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60721920).

55270012 is an abundant number, since it is smaller than the sum of its proper divisors (66173828).

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

55270012 is a wasteful number, since it uses less digits than its factorization.

55270012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4570 (or 4568 counting only the distinct ones).

The product of its (nonzero) digits is 700, while the sum is 22.

The square root of 55270012 is about 7434.3804045798. The cubic root of 55270012 is about 380.9165594125.

Adding to 55270012 its reverse (21007255), we get a palindrome (76277267).

The spelling of 55270012 in words is "fifty-five million, two hundred seventy thousand, twelve".