55339830 has 192 divisors, whose sum is σ = 183980160. Its totient is φ = 11225088.

The previous prime is 55339783. The next prime is 55339841. The reversal of 55339830 is 3893355.

55339830 is a `hidden beast` number, since 5 + 533 + 98 + 30 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 237394 + ... + 237626.

It is an arithmetic number, because the mean of its divisors is an integer number (958230).

Almost surely, 2^55339830 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55339830, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91990080).

55339830 is an abundant number, since it is smaller than the sum of its proper divisors (128640330).

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

55339830 is a wasteful number, since it uses less digits than its factorization.

55339830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295 (or 292 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 36.

The square root of 55339830 is about 7439.0745392152. The cubic root of 55339830 is about 381.0768853041.

It can be divided in two parts, 55339 and 830, that added together give a square (56169 = 237²).

The spelling of 55339830 in words is "fifty-five million, three hundred thirty-nine thousand, eight hundred thirty".