55344630 has 32 divisors (see below), whose sum is σ = 144903168. Its totient is φ = 13416800.

The previous prime is 55344599. The next prime is 55344631. The reversal of 55344630 is 3644355.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55344631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83526 + ... + 84185.

It is an arithmetic number, because the mean of its divisors is an integer number (4528224).

Almost surely, 2^55344630 is an apocalyptic number.

55344630 is an abundant number, since it is smaller than the sum of its proper divisors (89558538).

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

55344630 is a wasteful number, since it uses less digits than its factorization.

55344630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167732.

The product of its (nonzero) digits is 21600, while the sum is 30.

The square root of 55344630 is about 7439.3971529957. The cubic root of 55344630 is about 381.0879027826.

Adding to 55344630 its reverse (3644355), we get a palindrome (58988985).

The spelling of 55344630 in words is "fifty-five million, three hundred forty-four thousand, six hundred thirty".