55281030 has 64 divisors (see below), whose sum is σ = 153930240. Its totient is φ = 12443904.

The previous prime is 55281011. The next prime is 55281041. The reversal of 55281030 is 3018255.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12106 + ... + 16034.

It is an arithmetic number, because the mean of its divisors is an integer number (2405160).

Almost surely, 2^55281030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55281030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76965120).

55281030 is an abundant number, since it is smaller than the sum of its proper divisors (98649210).

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

55281030 is a wasteful number, since it uses less digits than its factorization.

55281030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4013.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 55281030 is about 7435.1213843487. The cubic root of 55281030 is about 380.9418694595.

Adding to 55281030 its reverse (3018255), we get a palindrome (58299285).

The spelling of 55281030 in words is "fifty-five million, two hundred eighty-one thousand, thirty".