55270628 has 18 divisors (see below), whose sum is σ = 112515606. Its totient is φ = 23687328.

The previous prime is 55270627. The next prime is 55270643. The reversal of 55270628 is 82607255.

It can be written as a sum of positive squares in only one way, i.e., 53611684 + 1658944 = 7322^2 + 1288^2 .

It is not an unprimeable number, because it can be changed into a prime (55270627) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 140801 + ... + 141192.

It is an arithmetic number, because the mean of its divisors is an integer number (6250867).

Almost surely, 2^55270628 is an apocalyptic number.

It is an amenable number.

55270628 is an abundant number, since it is smaller than the sum of its proper divisors (57244978).

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

55270628 is a wasteful number, since it uses less digits than its factorization.

55270628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282011 (or 282002 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 35.

The square root of 55270628 is about 7434.4218336062. The cubic root of 55270628 is about 380.9179745484.

The spelling of 55270628 in words is "fifty-five million, two hundred seventy thousand, six hundred twenty-eight".