55430700 has 144 divisors (see below), whose sum is σ = 176301216. Its totient is φ = 13363200.

The previous prime is 55430689. The next prime is 55430701. The reversal of 55430700 is 703455.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55430701) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 237784 + ... + 238016.

It is an arithmetic number, because the mean of its divisors is an integer number (1224314).

Almost surely, 2^55430700 is an apocalyptic number.

55430700 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55430700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88150608).

55430700 is an abundant number, since it is smaller than the sum of its proper divisors (120870516).

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

55430700 is a wasteful number, since it uses less digits than its factorization.

55430700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324 (or 317 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 24.

The square root of 55430700 is about 7445.1796486049. The cubic root of 55430700 is about 381.2853519131.

The spelling of 55430700 in words is "fifty-five million, four hundred thirty thousand, seven hundred".