55612830 has 96 divisors (see below), whose sum is σ = 165279744. Its totient is φ = 11726208.

The previous prime is 55612819. The next prime is 55612841. The reversal of 55612830 is 3821655.

55612830 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (55612819) and next prime (55612841).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 34707 + ... + 36273.

It is an arithmetic number, because the mean of its divisors is an integer number (1721664).

Almost surely, 2^55612830 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55612830, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82639872).

55612830 is an abundant number, since it is smaller than the sum of its proper divisors (109666914).

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

55612830 is a wasteful number, since it uses less digits than its factorization.

55612830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1610 (or 1597 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 55612830 is about 7457.4010218038. The cubic root of 55612830 is about 381.7024948939.

The spelling of 55612830 in words is "fifty-five million, six hundred twelve thousand, eight hundred thirty".