55667430 has 144 divisors (see below), whose sum is σ = 181503504. Its totient is φ = 11733120.

The previous prime is 55667407. The next prime is 55667431. The reversal of 55667430 is 3476655.

55667430 is a `hidden beast` number, since 556 + 6 + 74 + 30 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55667431) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 56845 + ... + 57815.

It is an arithmetic number, because the mean of its divisors is an integer number (1260441).

Almost surely, 2^55667430 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55667430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90751752).

55667430 is an abundant number, since it is smaller than the sum of its proper divisors (125836074).

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

55667430 is a wasteful number, since it uses less digits than its factorization.

55667430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1011 (or 1001 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 36.

The square root of 55667430 is about 7461.0609165185. The cubic root of 55667430 is about 381.8273709910.

It can be divided in two parts, 5566 and 7430, that added together give a square (12996 = 114²).

The spelling of 55667430 in words is "fifty-five million, six hundred sixty-seven thousand, four hundred thirty".