55270812 has 12 divisors (see below), whose sum is σ = 128965256. Its totient is φ = 18423600.

The previous prime is 55270811. The next prime is 55270823. The reversal of 55270812 is 21807255.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 55270812.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55270811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2302939 + ... + 2302962.

Almost surely, 2^55270812 is an apocalyptic number.

It is an amenable number.

55270812 is an abundant number, since it is smaller than the sum of its proper divisors (73694444).

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

55270812 is a wasteful number, since it uses less digits than its factorization.

55270812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4605908 (or 4605906 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 30.

The square root of 55270812 is about 7434.4342084654. The cubic root of 55270812 is about 380.9183972493.

The spelling of 55270812 in words is "fifty-five million, two hundred seventy thousand, eight hundred twelve".