55513430 has 32 divisors (see below), whose sum is σ = 116861184. Its totient is φ = 18589536.

The previous prime is 55513429. The next prime is 55513433. The reversal of 55513430 is 3431555.

55513430 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 55513430.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55513433) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 6212 + ... + 12231.

It is an arithmetic number, because the mean of its divisors is an integer number (3651912).

Almost surely, 2^55513430 is an apocalyptic number.

55513430 is an abundant number, since it is smaller than the sum of its proper divisors (61347754).

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

55513430 is a wasteful number, since it uses less digits than its factorization.

55513430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18500.

The product of its (nonzero) digits is 4500, while the sum is 26.

The square root of 55513430 is about 7450.7335209360. The cubic root of 55513430 is about 381.4749463509.

Adding to 55513430 its reverse (3431555), we get a palindrome (58944985).

The spelling of 55513430 in words is "fifty-five million, five hundred thirteen thousand, four hundred thirty".