55515434 has 16 divisors (see below), whose sum is σ = 90021120. Its totient is φ = 25524720.

The previous prime is 55515419. The next prime is 55515437. The reversal of 55515434 is 43451555.

55515434 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 55515434.

It is not an unprimeable number, because it can be changed into a prime (55515437) 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 7 ways as a sum of consecutive naturals, for example, 3107 + ... + 10985.

It is an arithmetic number, because the mean of its divisors is an integer number (5626320).

Almost surely, 2^55515434 is an apocalyptic number.

55515434 is a deficient number, since it is larger than the sum of its proper divisors (34505686).

55515434 is a wasteful number, since it uses less digits than its factorization.

55515434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8165.

The product of its digits is 30000, while the sum is 32.

The square root of 55515434 is about 7450.8680031255. The cubic root of 55515434 is about 381.4795366311.

Adding to 55515434 its reverse (43451555), we get a palindrome (98966989).

The spelling of 55515434 in words is "fifty-five million, five hundred fifteen thousand, four hundred thirty-four".